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IMPLEMENTS, agricultural, 64, 156

Improved: air pump, 443; combination
tool, 176; Area, Kapper's, 17; friction-
clutch, 569; life-preserving dress, 110;
machine for mortising timber, 31 ; port-
able steam engine, 469; screw-driver,
248; tricycle, 308, 420. 468; velocimaine,
155; waggon-wheel, 220

Improvements in: cooking, 60; direct-
acting engines, 108; filtration, 180;
motive power, 224; paddle-wheels, 108;
power-loom*, 6(>8; turret clocks, 84

Index for dividing plate, 114

Insect, cochineal, 137

Intensity coll, 547

internally-geared lathe, 349

Iris diaphragm, 540

Irish ring money, 238

Iron cranes, 443, 536, 537, 583; iron'pans,
contents of, 20

Irregular forms, cutting, 208

Irrigation, 405

Isometrica), 524; Isometricul drawing,
420

JEWELLED holes, 428
Joint, steam, 571

KAPPER'S improved fires, 17
Kelscy's wedge-driving drums. 113
Кеуеа'в improved waggon-wheel, 220

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Iiooms, power, 608

Low-water detector, 325

Lubricators: economic, 109; Turner'*, 157

Lull's improved friction-clutch, 569

Lunar motion, 545

MACCLESFIELD velocipede, 89

Machinery for: boring rock, 373; cutting
irregular forms. 208; drilling rock, 272,
300; fret-sawing, 612; magneto-electric,
132; making beet sugar, 393; making
soda-water. 404; mortising timber, 31;
mowing, 156; planing, 429, 493; sewing,
113,157, 231, 232. 281, 376, 588 ; shear-
ing, punching, and stretch ing, 133; smut-
ting grajfl, 594, 695; stoning cherries,
252; turning medallions, 617; washing,
429.

Magneto-electric machines, Slater's, 132

Making soda-water, 404

Mallet, 119.

Management of bees, 597

Manchester wheel gauge, 328

Map of the Darien Canal, 129

Maranta arrow-rout, 612

Materials, strength of, 123

McCarthy and Cunningham's improved
motive power, 224

Measure and funnel combined, 136

Mechanical lingers, 305; mechanical
movements, 5, 28, 53. 76, 104, 124, 148,
177, 200, 221. 248. 269. 292, 421, 314, 365,
392. 417, 440, 464, 488, 536, 584

Modal I ion turning, 617

Medical coil, 189

Mensuration of superficies, 502

Meteors and comets. 482

Meters: evaporation, 492; gas, 571

Metronome, the, 161

Microscope, the, 579; microscui>e, Terry's,
253

Microscopic accessories, 416.613; micro-
scopic appearance of starches. 493, 612

Microscopical examination: of cocoa,
293; of coffee and chicory, 81

Milbuni's apparatusfordosiccating grains,
13

Millstones, 128, 152. 201. 373

Mil Ionian bicycle, the, 352

Mitrailleuse, the French, 516

Model engine pump, 157; model steam-
engine, 213, 236

Moistening labels, 136

Momentum and attraction, 444

Moncrieffs hydro-pneumatic gun-carriage1,
564

Money. Irish ring, 238

Moon, the. 4-3

Mordan's self-centering chuck, 514

Mortising timber, 31

Motion: link, 352, 425. 520, 541, 589;
lunar, 545; motions and figure of the
earth, 7, 89, 135, 209

Motive power, improvements in, 224

Mounting planing machine, 493

Mowing machine, Aliens, 156

Musical notation, 496

Mussel-climbing. 561

Muzzle for dogs, 405

NAMES on plans, 141, 188

Nature, sketching from. 3. 4. 106

Nebulae and comets, 273, 296

Needham's starter for sewing-machines,
232

Nets, fishermen's, 380

Now lathe by George Plant 421; now
style of railway, 277; Now York pneu-
matic tunnel. 32, 36, 37

Notation, musical, 496

OBTAINING motive-power, 224

Occultation of Saturn, 136
Old coins, 94. 118
Opera-gla*H lenses, 136, 185
Operations of the wood-boring l>ectlo, 176
Optical and spectroscopical, 323, 500. 586
Organ accordion stand, 546; organ blow-
ing, 228; organ construction, 112
"Otter" for lifeboat service, 233
Oval, 526
Oxyhydrogen gas stove, 41

PADDLE-WHEELS, Wright's, 108

Pan, vacuum, 393

Papers, clip for. 284

Parabolising specula, 37

Paris, defences of, 560

Patent: apparatus for cleaning grain,
348; coil, Varley's, 20: compound set,
128; rotary spader. 64 ; starter for
sewing-machines, 232; wedge-driving
drums, 113

Patterns: cylinder, 260; girder, 259

Pedcspecd. the, 61

Perkins's high-pressure engine, 109

Perry's microscope, 253

Perspective, 332; perspective drawing,
397

Phantom bicycle, 277

Photographic. 333 : photographic tent, 520

Photoscope, the, 377

Piano string-space. 352

Piston pressure, 599;

Pistons, Rams bottom's, 405

Plan for carrying trains across the Straits
of Dover. 324; plan for cutter-bar. 187

Planet Vulcan, the supposed, 84, 137

Planing machine, 429, 493

Plane, names on, 141, 188

Plant, cochineal, 137; Plant':; lathe, 421

Plough, bookbinder*', 259

Pneumatic tunnel. Now York, 32, 36, 37

Polariecope, the, 468

Polytechnic barometer, Royal, 8

Portable steam engine, 469

Potato dibble, 156

Power-looms, 608; power, motive, 224;

power of screw, 592
Practical geometry, squaring the circle

by, 301
Preserving flowers, 357
Presses : bookbinders' cutting, 65; Gough's

arming. 441. 442; leather, 597
Pressure : on columns, 21 ; on piston, 599;

or water, 598
Printing and arming press, 441, 442;

printing names on plans, 141. 188
Problems, 19, 44, 70, 141, 188, 477, 597
Projections, 93
Propellers, Fothergill's, 12
Proposed Darien Canal, 129
Protractor, 23
Pulleys and blocks, 425; pulleys, Kclsoy'e

wedge-driving, 113
Pumps: air, 325, 445; model-engine, 157;

Shand's steam. 85
Punching, shearing, and stretching ma-
chino, 133

aUANTITATl V J5 analysis, 88

RAILWAYS: street, 277; system,

Hutchinson's. 149: trains across the

Straits of Dover. 324
Ramsbottom's pintona, 405
Readings from the globes. 208. 252, 278,

329, 353, 372, 422, 472, 518, 588
Reaping machine. Allen's, 156
Reciprocal geometry, 6**1
Reclining sundial, declining. 62
Rectifying the circle, 370, 522
Recdrt, harmonium, 382
Re*t, slide, 249

Rifles: Chassepot. 517; Sopor, 138
Rihoux's life-preserving dress, 1.10
Ring money, Irish. 238
Road locomotive, 253
Roberta's galvanic battery, 305; Rol>erts's

triple vacuum-pan, 393
Rock-drilling machines, 273, 300, 373
Roller barrow, 359
Rotary' spader, patent, 64
Rotatory engines. 61. 115
Royal Polytechnic barometer. 8
Buddick steam-engine, the, 4*:»

SACKS, lifting, 140

Safety-va Ives, 214. 260, 280, 309, 325, 352

Saltaire lathe, the, 52

Satellites of Uranus, 522

Saturn, 136, 505, 529

Saw-teeth, 139

Science for the voung. 78. 79. SO, 105, 154,
171, 196, 222, 268. 296. 297. :;1S, 338, 364,
411. 413. 485, 507, 508, 532, 533, 557, 581,
582

Scraper for boilers and tubes, 429

Screw-cutting lathe, small. 252; screw-
driver, iinprovod, 248; screw power,
592; screw-propellers, Fothergill's, 12,

Scroll for head-rail, 425

Seeks apparatus for cleaning grain, 348

Self-acting blowpipe, 305; self-acting feed-
water heater, 369; self-centering wire-
chuck, 544; self-feathering screw pro-
pellers, 12; self-propelling vehicles, 77

Setting jewelled holes. 428

Sewing-machines, 113, 157, 231, 232. 281,
376, 588

Shand's steam-pumps and fire-engines, 85

Shearing animals and skins, 125; Shear-
ing, punching, and stretching machine,
133

Shells, concussion, 136

Shewan's spiral water-wheel 157

Shiptouian velocipede, the, 253

Sirius, spectrum of, 362

Sketching from Nature, 3, 4, 106

Skins, shearing. 125

Slater's magneto-electric machines, 132

Slide-rest, spherical, 249; slide serew-
cutting lathe, small, 252; slide-valve,
255, 589

Slot-cutting, 112

Small slide screw-cutting lathe, 252

Smith turn buckle, the. 612

Smut and separating machine, 594, 595

Soda-water machine. 404

Solar calorimeter, 416; solar eclipses, 225

Solomons's compound set, 128

Soper rifle, the, 138

Sources and application of electricity, 26,
27, 75, 195, 196, 265, 388, 531. 580

Space for strings in piano, 352

Spader, patent rotary, 64

Specimens of turned work, 372

Spectroscopical and optical, 323. 500

Spectrum of Sirius, 362

Specula, 37

Spherical slide rest, 249

Spinning cotton, 112, 133. 183. 204, 230,
231. 284

Spiral water-wheel, 157

Splitting whalebone, 499

Sportsman's velocipede, 349

Spots on the sun. 397

Squaring the circle, 301. 376. 4Î4

Stand for organ accordion, 546

Starches, 493, 612

Starter for sowing machines, 232

Steam boiler-feeding, 204, 301. 369; stenra
carriage, 304; steam cylinders. 40;
steam drills, diamond-pointed, 272;
steam engine, 301 ; steam engine lubri-
cator, 157; steam engine, model, 213,
236; steam engine, portable, 469 : steam
engine, the Ruddick, 489; steam tiro

engines and pumps, 85; steam joint.
571; steam-power, 46; steam whistle, 43

Step for bicycle, 614

Stevens's improvements in cooking, 60

Stockwell'a improved combination tool,
176

Stone and brick, drill for. 183

Stoning-cherriee, machine for, 252

Storer's direct-acting engines, 108

Stove, oxyhydrogen gas, 41

Strains on girders, 10

Street railway, 277

Strength of materials, 123

Stretching, shearing, and punching ma-
chine, 133

String and belt. Wampum, 44; string
space in piano, 352

Stripes оГ tho sunbeam, 145, 172, 193, 217

Structure of a country, geological, 271

Sunbeams, stripes of, 145, 172, 193, 217

Sundials: erect declining, 15; declining
reclining, 62

Sun spot, 397; sun's parallax, 402

Superficies, mensuration of, 502

Supposed planet Vulcan, 84, 137

Swinging-gate latch, 61

Symbols, chemical, 49. 99

System of railways, Hutchinson's, 149

TEETH: wheel, 328; saw, 139

Telegraph v. 527

Telescopic, 85, 204. 472. 527, 5S6, 002

Tent, photographic, 520

Theory and application of electricity, 26,
27, 75, 195, 196, 265, 388, 531. 580.

Three-wheeled velocipede, 262

Throttle-valve, 261

Timber, machine for mortising. 31

Tool-holder, 209; toot improved combina-
tion, 176; tool for inclined or level sur-
faces, 401

Traína across the Straits of Dover, convey-
ing. 324

Tramway, wire. 229

Tricycles, 184, 308, 420, 468, 496

Triple vacuum-pan. 393

Trisecting angles. 89. 142, 257, 329, 376

Trotting velocipede, the, 76

True velocipede, the, 82

Tubes, scraper for, 492

Tubular wells, Watson's, 276

Tunnel, Broadway Pnoumatlc, 32, 36, 37

Turn-buckle, Smith's, 612

Turned work, 372

Turner's engine lubricator. 157

Turning bottoms of cylinders, 521; turn-
ing medallions, 617

Turret clocks, 63, 84

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ARTICLES.

ABSTRACT of paper on the sun, 677

Abuses and uses of the ear. 6, 28, 51

Accessories to the microscope, 462

Accidental colours, 289

Action of the jaws in drowning, 364;
action of magnetism on light, 33

Activity, lunar, 511

Adulteration of coffee, SI

/Eronautical Society, 295

Air, filtered, 102

Albert Hall, organ for, 54

American water-weed. 553

Analysis, food, 175, 202, 292

Ancient coins, 169,197, 218. 314

Animal magnetism, 343; animals, shear-
ing, 125

Antiquity of the world, 313,337, 362,410,
435 484, 553, 680

Antiseptic, a new, 559

Aplanatio searcher, 179

ApjwmtMs: deHiccatlng grains, 4 ; dis-
tilling, G04; optical 606; smutting grain,
343

Application of photography to military
purposes, 439; applicatiouand theory of
electricity, 26. 74, 146,195, 218, 265, 340,
387, 481, 530, 579

April, astronomical notes for, 34

Arming press, Gough's, 4-41

Art workmanship competition, 319

Astronomical notes, for April, May, June,
July, August, and September. 34, 155,
250, 346, 444. 563; Astronomical Society,
Royal, 8, 109, 224: astronomical stu-
dent.-*, hints to, 73, 265, 386

August, astronomical notes for, 444

Auk, the great, 124

BARNACLES, 244

Barometer, the Royal Polytechnic, 8

Rarrels, enamelling, 586

Batteries, galvanic, 297

Bees, 582

Beot-root sugar, 302

Bicycle, the "Phantom," 276

"lane's machine for mortising timber, 31

Blast furnace, regenerative. 244

Blindness, colour. 121, 150,1(19, 194

Blowpipe, the English Mechanic, 77

Body and mind, 177, 197, 221, 242, 274,

341, 366
Boiler evaporation, meter for, 490; boiler

inspection, 466; boilers: high pressure,

459; stationary, 469
Boring insects, 176; boring rock, machine

for, 367
Bort for dressing millstones, 127, 152, 178,

200
Brass, white, 292

Brightness of the moon's surface, 659
Broadway pneumatic tunnel, 32
Burleigh drilling machine, 299

CAISSON,, a great, 465

Canal, Darion, 129

Captain Petersen's steam lifeboat, 202

Carbon printing, ."<38

Carmine, 391

Caterpillars, curious, 30, 125, 243, 339, 437,

638
Cement, Portland, 582; cements, 538
Chains, 122
Chapters on curious caterpillars, 30, 125,

243, 339, 437, 533
Chemical notation, 9; chemical symbols,

49, 97
Chemistry, Inorganic. 506, 554
Chicory under the microscope, 81
Choice of a microscope, 418, 531, 578
Civil Engineers, Institution of, 195
Cleaning grain, 343
Clementa's economic lubricator, 109
Climbing of mussels, 561
Clocks, winding. 443
Coal gas, purifying, 394; coal mining, 2tt»,

294
Cocoa analysis, 175,202, 293
Coffee adulterations, 81
Coffey's apparatus for distillation, 604
Coins, ancient, 169. 197, 218, 314
Collecting insects, 317
Colour of thenioon's surface, 559; colours.

accidental, 289; colours and colour

blindness. 121, 150,109, 194
Combination tool, improved, 176
Combustion, phenomena of. 2, 32, 55
Comet, Ilalley's, 50, 77, 100
CumetH and meteors. 313, 362, 434,-182;

comets and nebulas, 272, 295
Common roads, steam on, 442
Competition of art-workmen, 319
Compound engines, 465; "compound set,'1

Sulomons's. 128
Condition of the sun, 677
Constructing high electrical resistance

466
Constructive horology. 418
Country and town microscopical jottings.

337, 363 410. 436, 484
Cranes, wrought-iron, 443, 536. 583
Cunningham and McCarthys improve-
ments in obtaining motive power, 223
Currents, electric. 603
Curious caterpillars, 30, 125, 241. 339, 407.

&)3

Cutting glass, 298

Cyclosi* in Anacharis, 553

Cylinders, friction in, 273, 294, 344, 388

DARIEN CANAL, proposed, 129

Docorticating grain, 343

Deep coal-mining. 294; deep tubular
wells, 275; deep wells, motive power
from, 391

Defences of Paris, 5G0

Desiccating grains, 4

Determination of Bulphur in Irons, 64

Diamond or bort for millstones, 127, 162,
178, 200; diamond-pointed steam drills,
272; diamond rock-boring machine. 367

Different kinds of foods, value of, 107;
different modes of working coal, 269,
294

Direct-acting engines, Storer's, 108

Discoveries, recent scientific, 58, 245, 368

Distilling apparatus, Coffey's, 604

Doirier's Improved velociraaue, 155

Dress, life-preserving, 110

Dressing lead ores. 80 ; dressing mill-
stones, 127, 152, 178, 200

Drilling machine, the Burleigh, 299;
drilling rock. 272

Drills, diamond-pointed, 272

Drowning, action of the jaws in, 3C4

Duty of steam-engines, 319

Dyeing, phosphates in, 511

EAR, the, its uses and abuses, 5, 28, 51

Earth, the, its figure and motions, 6

Eclipses, solar, 225

Economic lubricator. 109

Economical purification of coal gas, 394

Economising heat, 388

Edge tools, grinding. 275

Efficient lathe, an, 52

Electric currents, 603; electric fulgurator,
the, 224

Electrical resistance, high. 406

Electricity, its theory, sources, and appli-
cation, 26, 74, 146,195, 218, 265, 340, 387,
481, 630, 579

Electro-typographic machine, 510

Elementary science, 54, 78. 105 164,171,
196, 222. 267, 296, 318, 337, 364, 411, 485,
507, 532, 556. 581

Emigration to Victoria, 315. 345, 389

Employment of workmen, 174

Enamel printing on, 538

Enamelling liquor barrels, 586

Euergy, 366. 390, 415, 510

Engineers. Manchester Institution of, 31

Engines: compound, 465 ; direct-acting,
108; duty of, 319; high-pressure, 106;
portable. 467; Euddick. the, 489

Enauhh Mechanic blowpipe, the, 77;
English Mechanic lifeboat, 101; Eng-
Lish Mechanic Mutual Improvement
Society, Manchester, 220; English
Mechanic Society of Arts, Edinburgh,
180, 195,300; English steam road-roll-
ing, 605

Escape, fire, 153

Evaporation meter for boilers, 490

Examination papers. Whitworth Scholar-
ships, 316; examination of rocks and
minerals, microscopical, 580; examina-
tion, systematic microscopic, 299

Exhaust steam for heating purposes, 56

Exhausted tea-leaves, 127

Exhibition of 1871, 321; Exhibition,
Workmen's International, 409, 457

Exhibitions, working men's, 385, 457

Experiment, medical, 390

Experimental research in relation to em-
ployment for workmen, 174

Experiments on the resistance of iron and
steel, 539

FELLOW of the Royal Astronomial So-
ciety, articles by:—
Astronomical notes, 34, 155, 250, 346,

444. 563
Flight of a star, 361
Saturn, 605, 529
Time, 1

What stripes the sunbeam, 145, 172,
103. 217. 241
Figure and motions of the earth. 6
Filtered air, 102
Filtration, Improvement in, 180
Fire-escape, Hawkins's, 163: fireproof

apparatus for smutting grain, 343
Flight of a star. 361
Flute and its vicissitudes, the, 411,45S, 557,

603
Food analysis, 175, 202, 292: food, gelatine

as a, 5S6; food, value of, 107
Forecasting of storms, 537. 660
Formation and antiquity of the world, 313,

337, 362, 410, 435, 484, 553, 580
France and Prussia, strength of. 509
Friction, 33, 82, 250, 467, 613, 585; friction

In steam cylinders, 273, 294, 344, 383
Fulgurator, electric, 224
Furnaces, hot blast, 244

GALVANIC batteries, 207

Gas management, 292; gas manufacture.

507; gas, purifying. 394
Gelatine as a food, 686
Generation, spontaneous, 442
Geographical Information, 126
Geological pedigree of the horse, 102;

geological structure of a country, 219,

270
Geometry, reciprocal, 601
Glass-cutting, 298
Good paint, a, 179

Gough's printing and arming press, 441
Grain, smutting and cleaning, 34-1; grains,

apparatus for desiccating, 4
Grand organ, a. 54
Granite, 562

Great auk, the, 124; great caisson, 465
Grinding edge-tools, 275

HALFPENNY postage, 301

Halley's comet, 50. 77, 100

Harmonium, practical treatise on, 25, 99,
173, 290, 433, 458, 555

Hawkins's fire-escape, 153

Heat, economising, 388; heat, solar, 416;
heat. Professor Tyndall on, 55

Heating with exhaust steam, 56

High electrical resistance, 466; high-
pressure boilers, 459; high pressure
engines, 106

Hints on microscopes, 274; hints on
watering plants, 490; hints to astro-
nomical students. 73, 265, 380

Horology, constructive 418

Horse, geological pedigree of, 102

Hot-blast furnaces, 244

How to choose a microscope, 418, 531;
how to collect insects, 317; how mer-
curial thermometers are made, 539;
how to obtain stereoscopic photographs
of microscopic objects, 606; how to use
cements, 538.

Hutchinsou's new railway system. 148

Huxley, Professor, on the horse, 102

IMPROVED :combination tool 175; life
preserving dress, 110; machine for mor-

• tising timber, 31; portable steam-
ongine, 467; screw-driver, 248; velocl-
mane, 155; waggon wheel 220

Improvements in: direct-acting engines,
108; filtration, 180; gas manufacture,
507; obtaining motive-power. 223;
optical apparatus, 606; paddle-wheels,
108; power-looms, 607

Information, geographical 120

Inorganic chemistry, 506, 554

Insect*, boring, 176; insects, collecting,
317

Inspecting boilers. 466

Institution of civil engineers, 195; Insti-
tution of Engineers, Manchester, 31

Intense electric currents, 603

International Exhibition, Workmen's, 409,
457

Introduction to inorganic chemistry, 506,

554

Iron cranes, 443, 63G, 583; iron, resistance

of, 539; iron, Bulphur in, 65
Islington, the exhibition at, 409, 457

JAY'S metallic paint, 179
Jaws, action of in drowning, 364
Jottings, microscopical 337, 363, 410, 43G,

484
July, astronomical notes for, 346
June, astronomical notes for, 250

KEYES'S improved wheel, 220

LATHE and its uses, 248; lathe for

Titus Salt, Esq., 52
Launching a great caisson, 465
Laws on patents, the, 202
Lead ores, dressing. 80
Leaf as a worker, the, 391, 509
Leaves, tea, 127
Lieut-Gen. Hutchinson's railway system

148
Life, organic, 402, 486; life, progression

of, 534, 658; lire-preserving dress, 110
Lifeboat the English Mechanic, 101;

lifeboat, steam, 202
Light and magnetism, 33
Liquor-barrels, enamelling, 586
Liver, structure of. 56
Lockyer, Mr., on the sun, 110, 320
Looking-glasses, platinised, 27, 50
Looms, power, 607
Lubricator, economic, 109
Lunar activity, 511

MANAGEMENT of gas, 293

Machine for drilling, the Burleigh, 299
machine, electro - typographic, 510
machine for mortising timber, 31
machine, rock-boring, 367

Magnetism, animal, 343; magnetism and
light, 33

Making thermometers, 519

Manchester Institution of Engineers. 31;
Manehestriaii English Mechanic's
Mutual Improvement Sveicty, 180

Manufacture of gas, 507; manufacture of
Portland cement, 582

Manufacturing sugar from beets. 392

Materials, strength of. 97, 122, 199, 342

Mathematics, 57, 83, 180

May, astronomical notes for, 155

McCarthy and Cunningham's motive-
power, 223

Measures and weights, 440

Mechanical movements, 4. 27. 53, 75, 104.
124, 148, 176, 200, 220, 247 269, 291, 321,
344, 365, 392. 417. 440. 404, 488, 536, 5s4

Medical experiment, 390

Mercurial thermometers,' 639

Metallic paint, Jay's, 179

Metamorphoses of bees. 582

Meteors and comets, 313, 362, 434, 482

Meter, evaporation, 490

Method of high electrical resistance, 460

Microscopes: choosing, 274, 418, 631, "*7K;
mounting for, 602

Microscopic accessories, 402; microscopic
examination, 299; microscopic objects,
606

Microscopical examination of rocks and
minerals, 508; microscopical jottings in
town and country, 337, 363,410,430, IS4;
Microscopical Society, Royal 121; mi-
croscopical, 81. 179, 292, 299 ,418

Milburn's apparatus for desiccating grains,
4

Military uses of photography, 439

Millstones, dressing. 127, 162, 178, 200

Mind and body, 177, 197, 221, 242, 274, 311
866

Minerals and rocks, 508

Mining coal, 294

Mirrors, platinised. 438

Mitrailleur, the 485, 511

Modern chemical notation, 9

Modes of workiug coal, 209, 294

Moon, surface of, 559

Moonlight evenings, telescope work fr.r,
418,436, 602

Mortising timber, 31

Most efficient lathe, a, 62

Motions ami figure of the earth, 6

Motive power, 223; motive power from
deep wells, 391

Mounting for the microscope, 602

Mussel-climbing, 561

NATURE, sketching from, 3, 106

Nebulas and comets, 272. 295

Norman Lockyer on the sun, 110, 320

Notation, modern chemical 9

Notes, astronomical 34, 155, 250. 346, 444.
563; notes of proceedings. Astronomical
Society, S. 109, 224; notes on recent
scientific discoveries, 58. 245. 308

New: antiseptic, 659; elccti-o-typographie
machine, 510; patent "compound set,'
128; salt for intense electric current;
60-3: sphygmoscope, 586

New York pneumatic tunnel, 32

OBJECTS, microscopic, 606
Obtaining motive power, 223; obtaining

stereoscopic photographs of microscopic

objects. 606
Observations of the Run, 320
Optical apparatus, 606
Ores, lead, 80

Organ for the Albert Hau, 54
Organic life, 4412, 486
Original experimental research in relation

to employment for workmen, 174
Other worlds than ours, 241
Ourselves and our subscribers, 1, 205. 300,

361, 3S5, 409

PADDLE-WHEELS, Wright's, 108

Paint, a good, 179

Paris, defences of, 660

Parsous's white brass, 292

Patent ''compound set," Solomons's, 128;

patent laws, the, 202
Pedcspoed, the, 63

Pedigree of the horse, geological 102
Perkins's high-pressure engine, 100
Petersen's steam lifeboat, 202
'• Phantom" bicycle, the, 276
Pharynx and jaws, action of i" drowning,

364
Phenomena or combustion, 2, 32, 55
Phosphates in dyeing, 511
Photographs of microscopic objects, 6(HJ
Photography for military purposes, 439
Physical condition of the suu, 577
Piece of granite, a, 563
Plants, watering, 490
Platinised looking-glasses and mirrors,

27. 56. 438
Pneumatic tunnel New York. 32
Polarisation of heat, 55
Polytechnic barometer. Royal 8
Popular food analysis, 175, 202
Porcelain, printing on. 538
Portable steam-engine, 407
Portland cement 582
Postage, halfpenny, 391
Power from deep wells, 301; pow. r

looms, 607; power, motive, 223

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Practical treatise on the harmonium, 25

99, 17.% 290, 4-***t. 458, 555
PretM, printing ami arming;, 4-11
Printing, carbon, 538; printing on enamel

and porcelain, 538
Prismatic sections, 414
Probabilities in science, 103

Proceedings of the Royal Agronomical

Hwcioty, 3, 109, 224
Proctor, Mr. R. A., articles by:—

Abstract of a paper by Dr. Zollner on

ibo nun. 577
C'oimns and meteors, 313, 3€2, 434,

482
Earth, the, its figure and motions, B
Proiessur ITuxley on the hor?f\ 102;

Professor Tyndall on filtered air, 1"2
Progression of life, 534, 558
Proposed Darien Canal, 129
Prussia and France, strength of, 50!)
Purifying coal-gue, 394
PjxometerB, B')7

RAILWAY SYSTEM, HutcUin-
hon's, 148

Recent improvements in griv. mannfaetnre.

507: recent bcicutiflc discoveries. 58.

245, 368
Reciprocal geometry, 601
RcgtMiemiive hut-blast fnrnaces, 244
Ke'ntinns between bodv mid mind. 177

197. 221, 242. 274. 341, 3G6
Relative strength of France and Prussia,

509
Remarks on Victoria, 315, 245, 389
Research in relation to employment for

workmen, 174
Resistance, electrical, 466; resistance of

Iron and Bteel, 539; resistance of pris-
matic sections, 414
Rest, rtlide, 248

liihi ux's liJ'e-pref;erring dress, 110
B< nd-rolling, Rteam, <;<'<">; road steamer,

Thomson's, oil
Reek-boring and drilling machines, 272,

:;<;7; rocks and minerals, 508
Rf vfiJ Astronomical Kt.eicty, 8, 100. 224;

II. ynl Microscopical Society, 121; Royal

Poljtcchnio barometer, 8
Huddtek steam-engine, the, 4?0

SAFETY in working coal, *_>6!t, 294

Salt, 181: salt for intense electric cur-
rents, 603

Saturn. 505, 529

Scenery and geological structure of a
country, 219, 270

Scholarship", the Whit worth, 31B

Science for the young, 51, 78, 10.', 154,
171, 19G, '2-2-2, 267, 296, 318, 337. 3C1. 411.
485, 507, 532, 556, 681; science, proba-
bilities in. 103

RclentUic discoveries, recant, 58, 215. 868

Herew-driv»;r. improved, 248

Searcher, aplanatic, 179

Seeks apparatus for smutting grain, 343

Sections, pri^munV, 414

Selecting microscopes, 274

Self-propelling vehicle*. 77

September, astronomical noft»s for, ."■(,:{

Shearing animals or skins, 125

Nli.'cburyness, mitrailleur at. 511

Sketching from Nature, 3, 100

Skins, shearing, 126

Slide-rest, spherical, 248

Smutting grain, 343

Society of Arte' art workmanship compe-
tition, 319

Soiree of the Eoyal Microscopical Society,
121

Solar eclipses, 225; solar heat, 416

SolomonBs "compound set," 128

Sources of electricity. 26, 74, 146, 195, 218.
205, 340, 387, 481, 530, 579

Spectroscopic observations of the sun,
320

Spherical slide-rest, 248

SpbygmoRcopc, new, 586

Spontaneous generation of living things,
422

Star, flight of a, 361: star grouping, star
drift, and star mist, 246, 267

Stationary boilers, 459

Steam cylinders, friction in, 273, 291, 344.
388; steam drills, diamond-pointed,
272; Bteam engine, portable, 467 ; Rteam
engine, the Ruddick. 489; steam
engines, duty of, 319; steam, exhaust,
56; steam lifeboat, 202; steam on com-
mon roads, 442; steam road-rolling in
England, 605

S+eamer. road, 511

Steel, resistance of, 539

Stereoscopic photographs of miscroBCopio
objects, O0G

StoekwelTs improved combination tool,

175
Storer's direct-acting-engines, 108
Storms, forecasting, 537. 560
Story of a piece of granite. 562
Strength of France and Prussia. 509;

strength of materials. 97. 122. 199. 312
Stripes in the sunbeam, 145 172. 193. 217,

241
Structure of a country, geological, 219,

270; structure of the liver, 5<j
Studying insects, 317
Sugar from Iweta, 392
Sulphur in irons. 54
Sun, the, 577: sun, Norman Lockyer on

the, 110, 320; sunbeam's stripes, 146,172,

193, 217, 241; sunstroke, theory of, 603
Surface of the moon, 569
Swarming of bees, 582
Symbols, chemical. 49. 97
System of railways, Hutchinson's, 148
Systematic miscroscopic examination, 299

TEA-LEAVES, exhausted, 127
Telescopic work for moonlight evenings,

418, 436, 602
Temperature of the sun, 577
Testing the duty of steam-engineq, 319
Theory and applications of electricity, 26,

74. 146. 193. 218, 265. 340. 387,481,530,

579; theory of nebube and comet*, 272,

295; theory of sunstroke, 603
Thermometers, mercurial, 539
Thomson's road-steamer, 511
Timber, macbino for mortising, 31
Time. 1

Tools: combination, 175: edge, 275
Town and country miscroscopical Jottings,

337. 363, 410. 436. 484
Treatise on the harmonium, 25, 99, 173,

290, 433, 458. 565
Tree, varnish, 439
Trotting velocipede, the, 76
True velocipede, the, 31
Tubular-wells, Watson's, 275
Tunnel. Rr<'«adw:ty PnciiTintic, 32
Tvndnll. Profesor: on Altered air, 102; on

heat, 55

USE of phosphates in dyeing. 511; uses
and abuses of the ear, 5. 28, 51; uses of
the lathe, 248; usee of photography,

military, 439; uses and value of salt 1K1;
using cements, 538; using microscopes,
274, 418, 531, 678

VALTTE of different articles of food.

107; value of gelatine aa a food, 686;

valuo of salt, 181
Vanadium. 178 »

Varnish-tree. 439
Vehicles, self-propelling, 77
Velocimane, Doirier's, 155
Velocipedes: the trotting, 76; the true, "1
Vicissitudes of the flute, 41L, 4-">s, 557, C03
Victoria, emigration, to, 315, 345, 3*y
Volcanoes, 487

WAOOON-wheel, improved, 220

War. the, 481, 489

Watches, winding. 443

Water and war, 489; water-weed, Ameri-
can, 653

Watering plants. 490

Watson's tubular-wells, 275

Waves, the, 31

Weed, American water, 553

Weights and measures, 440

Wells motive power rrom, 391; wells,
tubular, 275

What Is energy. 366, 390, 415. 510; what
stripes the sunbeam, 145, 172, 193 217
241

Wheels: Reyes's waggon. 220; paddle, 108

Whit'.? brass, Parsons's, 292

Whit worth Scholarship examination
papers, 310

Winding watches and clocks, 443

Worker, the leaf a« «. 391. 509

Working coal. 269. 294; working men's
exhibitions. 385, 400

Workmanship, art, 319

Workmen, employment of, 174; Work-
men's International Exhibition. 400 457

World, the, it* formation and onrfmiirv
313, 337, 362. 410, 435, 484, 653, 5801
worlds, other, 241

Wright's paddle-wheels. 108

Wruught-iron cranes, 443, 536, 5S3

ZOLLKER, Dr.. on the &tm, 577
Zymotics, 394, 414, 438

LETTERS TO THE EDITOR.

[Many of the subject* under this head mil also be found in "Notes, Queries, and Replies,"]

ACCESSORIES to the microscope, 013

Accident": gun, 15; workshop, 473
Accumulating power, aoa. 425
Achromatic: object glasses, 282; tclc-

seopes, 110
Acids: carbonic. .W0: hydrofiiiosillcie, 10;

Iniwchlorlc, ISO; picric, MS. 690
Action 0/ the screw-propeller, 617
Activity, lunar, 371
•■ Adept," from nil, 38, 112, 183
Advantages of crushed oats, 64
Advertising andemplnymout, 22t!
Aeronautical Society, 853
Agricultural implements, 04. 156
Air-pnmp, the. 252, 305, 325, 375, 390. 445,

494
Alabaster glass, 590
Alchemy, 016

Ale. microscopic examination or, .-.22
Algebra, 253, .351
Algol. 540

Allen's reaping and mowing machine, IM>
Amnlgamatlou -aa a preventive or rust,
•>79 amalgamation movement, the. 42!
Amateur Tanning, 87; amatour micro-
scopical society, 017
America, travelling 111, 86
Analysis: quantitative, 87; spectrum. ..<>(..
Oil; analyses, water, 187, 234, 253, 282,
353.377
Ancient: architecture in India. 100;
British gold coin, 520; granite working,
1H- musical in-truuicnt. 10
A igles and tangentsT303. 351; angles, tn-

seotion ol, 89, 257. 32!), 376
\pcrturo and power of telescopes, 14
Apparatus, electro-magnetic. 185
Apparent paradoxes In equations, 88
Appeals: a Cumberland miner's. 307, 326,

3511 5y3; a workman's, 331, 3411
Ai.in-' annate mode of rectifying the circle,

37(i, 468, 522, 645
Approximations, geometrical, 451
Architecture in India. 100
Arithmetical problem. 227
Arithmometer, the. 114
Al row-root, 567, 612
Ai-enic test, 10
AvtiHcUlice, 11, 02
Artillery discbarges and ram, 448, 495, 015

Ash-l>ox for locomotives, 568

Astronomical. 58, 114, 130. IBS, 152,185,
204, 210, 234, 251, 257, 277. 280, 323, 349,
369, 401. -144, 450, 491. 494. 4!:7, Bid, 5*0,
593; astronomical notes, 563

Attraction and momentum. Hi

Auric chloride, 588

BACK-WHEEL bicycle, 136

Balancing millstones, 426
Ball, earth, and gun, 450
Bauds, galvanic, 11

Bar, cutter, 353; bar. microme:er, 379. 403
Baric chlorate, 64
Barium, chlorate of, 10, 186
Barni, 15

Barometer, water, 396
Barometric pressure, 444
Barton's feed-water heater, 309
Bath Forum recreations, 354
Batteries, 570, 587, 591: batteries: Cal-
laud's, 328. 347. 377, 522: chemical, 88;
galvanic. 225. 494: gauze, 211; iron In,
4ti2, 447, 450. 622: manganese, 38;
Roberts's galvanic, 305
Beardsley's dynamics, 112, 163.225
Bedford Canal experiment. 183
Bees. 115

Belfast Workmen's Exhibition, 257
Bell, clock, 330
Bellies of violins. 111
Belts of Jupiter, 35, 134
Bennett's chuck, 41, 114
Bicycle: ninety miles a day by a, 137:
riding, 374. :W8, 420, 49-1, 521, .543, 000,
592, 614; step Tor, 614
Bicycles. 329, 351. 370, 426. 472: bicycles:

back-wheel. 1 •'!»•: Mlltoniau. ::52
Big heads and phrenology, 40, 90
Biology and big heads. 90
Blacking brasswork. 587
Blindness, colour, 232, 234, 254, 258
Blocks, powers of. 425
Blowing glass. 113; blowing organ, 223
Blowpipe, seir-acting, 305
Blue mahoo wood. 111, 159, 100
Boat-building, 610
Bodies, heavenly, 282
Body, the human, 449

Boehm flute, 280, 37G

Boilers: reeding, 2i>4. 227, 426: Field, the,
622,543; incrustation or. 02: power of,
690; safety valves or, 852: scraper for,
491; scale in. 230; testing, 282

Bolters, silk. 403

Book-edges, eetting, 349; bookbinders'
cutting press, 04

Boomerang, the. 1«0, 257

Boring cylinders, 234, 390; boring insects,
258

Bottoms of cylindor covers. 521

Bow, cross. 15

Brake, carriage, 04

Brasswork, blacking. 587

Brazilian railways, 371

Bread-making, 15, 63

Breaker, contact, 181

Brewing. 161

Brick and stone drill. 183

Brief hints on cross-breedmg plauts, Jt*

Brighton wire tramway, 228

Brinsmead's history of the pianoforte, 446,
469

British gold coin, ancient, 520; British
Museum, lighting, 347; British work-
men, 161

Bronchitis. 02

Buckle, turn. 612

Building boats, 616: building organ, 88;
building and steering vessels, 30

Buildings, ventilating, 300, 332

Bungs, turning, 15

Burning glass, 208

CABINET and cottage pianos, Im-
proving, 41

Calculating distances, 136

Caliand's batter}-, 328, 347, 3,7, B22

Camera, 396

Canada, emigration to, 403

Cape Horn, Uood Hope, «c., 3<<i

Caps for reflectors, 257

Carbon monoxide, 250

Carbonic acid, 590: carbomn acid gas,
015; carbonic acid as a motive power,

014'
Carburettlng gas, 63
Carding engine, l-'W

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Colliery ventilation, 11
Colony, on English Mechanic. MO
Colour-blindness, 2-12. 234, 584. 25S;
colours of Jupiter, 86; colours of stars.
2.10
Combined funnel and measure. 130: com-
bined drill, runner and tap. Ill ; com-
bined punching, alien ring, and stretching
machine, 132
Comfort for railway traveller*. Kit
Commerce and trade. 161, 1*4. soil, 209,
227, 267. 276, .'InO, 326, 329. 331, :17S, K7S
Comparative temperature iu June '69 and

'70, 403
Composition of the human body, 449;

composition of the meteorites, 570
Couwtock'a rotary spader, 64
Concave lens, 307
Concussion shells, 136
Condenser, microscopic, 305, 353
Conductors, lightning. -144
Cones, frustrum of, 474
Cones flour, 10
Congratulations, 323
Conic sections, 446, 474. 497
Constellation names, 446
Constructing telescopes. 1.18, 251
Construction of: clavichord, 873; lathes,
44H, 474; organs. 112; velocipedes, 210,
374
Consumption, tobacco a preventive of, 591
Contact-breaker. 181
Contributors and querists, 546, 587
Convexity of water, 252
Cooking, Stevens's improvements in, 60
Copper sheathing, 160
Cornwall and Devon. 324
Cosmology, lunar, 423, .119. 545. 610
Cottage and cabinet pianoforte. 41
Cotton-spinning. 111. 133. 134 162. 182,

204, 230. 254, 284 302. 330, 850, 403
Coventry tricycle the, 468
Covering piano-keys, 86
Covers of cylinders. 521
Craters, lunar, 233, 374, 468, 619
Criminal literature. 63
Criticism, unfair, 374, 401. 426, 446
Cross-breeding plants, 378; cross-bow, 15
Crossing the Straits of Dover, 323
Crushed oate, 64
Crystals, soda, 10
Culture, mushrooms. 400; vine, 393
Cumberland miner s appeal, a, 307, 326,

360 .593
Cunningham and McCarthy's improve-
ments in motive power, 250, 3,11
Curious arithmetical problem, 227; curious

questions. 378, 618, 640. 592. 610
Curious sentence, 421, 462, 497
Currents, reaction of, 390
Cutler-bar, 353

Cutting book-edges, 349; cutting irregular

forms. 208; cutting-press, book-binders'

64; cutting slots. 112, 162, 181

Cylinder covers, 521; cylinders, boring.

234. 396 ^"

DARK lines in solar spectrum, 183 211
230, 256, 257, 279, 282, 302. 329. 347. 378

He omnibm, 395; Be omit ibus rebut mkJti-

btuet quibuadam aliis, 203
Declination of stars, 256
Declining sundials, 14. 62
Decoration of walla, 473, 497
Deduction from the germ theory, 258
Defences of Paris, the, 693
Degrees, 516, 667, 590
Delusions concerning feed-water heaters

010
Deprecatory and explanatory, 35

Designs for the lathe. 307

I>et,:s:L,r. low water. 32-1

Determining sulphur in Irons. 137

Devon anil Cornwall, 321

Dew-caps for reflectors, 257

1 Hals, silvering, 587

Diaphragm, the iris. 540, 5S7, 612

Dibble, potato. 1.16

Dinornu, 212, 226

Discharges ol artillery and rain, 448 495

646
Discoveries, electrical, 307
Diseases, germ, 616
Dissolving view painting. 472
Distance of the sun. mean 39 86 2"8 ■

distances, calculating, 136
Dividing plate, 114
Division plate, 612
Dod's electrical psychology, 11,1
Draught in carding engine, 136
Drawing: lsometrical, 420 : perspective

397; drawing for the million 16
Dressing millstones. 227
Drill, rimer, and tap combined. Ill • drill
for stone and brick, IK); drills, expand-
ing, 233; drills, tempering. 3.53
Drums, Kelsey's wedge-driving, 113
Ury plate photography. 279. 307, 308
Uugdale's clothes-washer, 228
Dyeing, 568

Dynamics, Mr. Beardsleys, 112,168, 223

E^?^?',*e' lu u«nre »n<l motions, 89,
■10/, Jos, 30J; earth, guu, and ball, 460
Eeocntries, 365, 400

Education: military. 401 ; sciontlflc, 570
Effects of carbonic acid, 690
Elastic boiler and tube scraper 491
Electric experiments, air pump for 325-
electric light for pictures, 492- electric
machines, 14; electric machines. Slater's
131; electric spark, resistance to 135'
Electrical discoveries, 307; electrical psy-
chology, lis F'

Electro-gilding, 424; electro-magnetic ap-
paratus, 185; electro-inugneiisni, 644,
670; electro-plating, 424

Ellipsograph, 448

Elliptical gearing, 397

Ellipticlty of the earth. 266

Emigration, 402, 414, 492, 520, f43; emi-
gration to Canada, 403: emigration and
ge. 'graphy, 115, 230, 25.1, 2.18, 283, 302,
327; emigration to Victoria, 878

Employment and advertising. 226

Engine lubricators, 156, 185, 212; ongine-
pnmp, model, 157

Engines: carding, 136; rotatory. 61, 114;
steam flro, 84; wheel-cutting, 12

Engineering query, 39

Enolish Mechanic: colony, 330. 402:
lifeboat, 251; microscopical society,
592; mutual improvement societies. 89,
ISO, 159, 187, 361; Booiety for Bristol.
593

English roads. 65, 89; English velocipede,
the. 6.1, 89, 230

Equations, 3.1, 38, 88, 131, 1.19, 220, 28-1,
300

Equtsonant flute, Clinton's, 425

Equivalents, 590

Erect declining sun-dial, 14

Examination of ale, miscroscopic. 622;
examination papers. South Kensington,
590; examination questions, 309

Exhibitions: Belfast Workmen's, 257;
Workmen's International. 130. 162

Expanding drills, 233

Experiment?: air-pump for electric, 32.1;
Bedford Canal, 183; on light, Tyndalls,

Expo-nre of plates, 645
Explanatory, 35, 63, 112
Eye, the, 266, 308, 546; eyesight, 306,332

FACTS wanted, 184

Fairlle's "Little Wonder," 208

Fairy wheels. 233, 2-58

Farming, amateur. 87

Pats and oils, vegetable, 331, 347, 379

Feathers, purifying. 895

Feed-water heater, 301. 329. 369. 610

Feeding boilers, 204. 227, 369, 426

Feet, tender, 590

Field boiler, the, 622, 513

Figure and motions of the earth. 89. 134,
1.19, 163, 182, 209, 212, 2*1, 256, 257, 2.18,
303

Files, renovating, 230

Finding position of eccentrics, 400

Fingorlng the Ante, 378

Fingers, mechanical, 30.1

Fire engines, steam, 84; tires, Kapper's

improved. 17
Fishing-rods, 111, 159, 162, 450

Flight, 282

Floriculture and pomology, chemical, 332,
379, 407

Flour, eones, 10

Fluorine, 590

Flute, the, 309. 373. 402. 426. 419, 469, 473,
61-5, 593; fluto-plaviug, 402, 475, 515.
593
Flutes: the Boehm, 280, 376; Clinton's,

42.1; Wards', 468
Flywheels, 301

Focal length of concave lens, 307
Focus, 591
Fog-horns, 160,496
Fontenelle, the crater, 468, 519
Foot-latho for turning bungs. 15
Forces, parallelogram of, 375
Forms, irregular. 208
Fortifications of Paris, 693
Forum recreations, Bath, 354
Fossil, coal-mensure, ill 2
FothergiH's self-feathering screw-propel-
lers, 12
Four-wheeled velocipedes, 3:!0, 621
"F.R.A.S."andtho "Nautical Almanac,"

14, 36, 68
Fraunhofer's lines, 114
Free-reed organs, 518, 669. 614
French mitrailleuse, the, 515
Fresco-painting, 497
Fret-saw machine, 612
Friction whoels, 446
Fruit-preserving. 450
Frustrum of cone. 474 S*

Fuel, gas as a, 10; fuel of the sun, 160,

203, 225
Functions of food, 207
Funnel and measure, combined, 136
Fusee for concussion shells, 136

GALVANIC bands, 11; galvanic batte-
ries, 22.1, 401, 022; galvanic batterv,
Roberts's, 305
Galvanism, medical, 281, 326
Galway, Mayo, and Sllgo, 348"
Gas by a new process, 474; gas as a fuel.
16; gas for heating groenhouse, 12;
gas mains, tool for, 111: gas stove, oxy-
hydrogen, 41 ; gas: carbunie acid, 014,
01.5; carburetting, 63; cheap, 354, 370,
400. 420, 448, 498, 542, 569
Gate latch, 61

Gauge-cock. 00; gauge, water, 00
Gauze batterv, platinised, 211
Gearing, elliptical, 897
Geography and emigration, 115, 230, 2-5.5,

258. 283. 302, 327
Geology, 303, 325; geology of Ireland,

282
Geometrical approximations, 451; geo-
metry, 300
Germ diseases, 016; germ theory the, 268,

307
Girders, strain on, 10

Glass: alabaster, 690; MoVTing. 113;
burning. 208; stained, 111

Glosses: object, 40, 185, 252, 282, 333;

opera, 135, 185
Globes, readings from the, 208, 262, 278,

329, 352. 372, 421, 472, 518, 642, 688
Glue, melting. 587
Gold: chloride of. 592; coin, ancient, .120;

testing, 590
Good: chemical battery, 88; Hope. Cape

or. 371: instrument, a. 16; paint 138
Gourds. 350

Granite-working in ancient limes, 16
Grass: China, 87 ; rhea. 114
Gravity lactometer, 30
Great circle sailing, 424
Greenhouse heating, 12. 284
Greenwood's fret-saw machine, 012
Grinding: object glasses, 333; speculum,

62, 284
Growing potatoes, 333
Gun accidents, 15; gun, ball, and earth,

350; gun-carriage, Moncrieff's, 604;

gun. the Gatllng, 56,1
Gunpowder, improvements in, 204

HAIR, purifying, 393

Hammers, steam, 326

Uaud-planing, machine, 446; haudrall
scroll, 425

Handy tent photographic, 620

Handwriting. 409. 616. 545

Harmonium, the. lsi'.. 200, 220, 231, 39R
461, 514. 518. 669, 014, 615; harmonium
keys. 80; harmonium reeds, 41. 90 471

Harvest, the. 402

Hawkins's musical notation. 58, 227

Heads, big, and phrenology, 40, ye

Heaters for feed water. 301. 329. 309. 010

neating greenhouses, 12. 284

Heavenly bodies, light of, 282

Height of clouds, ,115. 548. 519, 687

Herschellan telescope. 503

nighest vacuum in air pump. 252. 30-5

Hints: on cross-breeding plants, 378; to
correspondents, 017: to millers. 87 s

History of the pianoforte, 440, 400

Hodgson's wire tramway, 228

Holder for tool, 209

Holding papers, clip for, 284

Hominy, 87

Ilnpbin.son's valve. 12

Horizontal windmills, 14, 450, 495

Horns, fog, 100, 490

Horse-iKiwer. 613, 601

How to keep the clock right 02, 2.50; how
LLD.'s and Ph.D's are made, 515, 667;
how to make a camera, 396; how to
make sun-dials, 14, 62: how to skele-
tonise leaves, 360; how to trisect an
angle, 370

Human body, the, 449

Hydrotluosilieie acid, 10; hydro-pneu-
matic gun-carriage, 501

Hygiene of ventilation. 21"

Hypochlorlc ueid, 100

ICE, artificial, 11, C2

Ignition by electricity, 521

Illuminated portion of the moon, 11, 63

Implements, agricultural. 01, 150

Improved : uir pump. 44.1; tires. Kapper's
17; friction clutch, .509; tricycle, 308,
420, 4iw

Improvement s.icieties, English Me-
Chanic mutual, 89. 130. 159. 187

Improvements in: cooking, 00; gun-
powder, 204; motive power. Cunning-
ham's, 25<;. 351 ; old cottage and cabinet
pianofortes, 41; sewing machines, 5H8;
steam pumps and lire engines, 84;
turret clocks, 83

Inclined surfaces, tool for, 401

Increase of insanity. 111

Incrustation of boilers. 62

Index for dividing plate. 114

India-rubber, vulcanising, 540

Indian architecture, ancient, 160

Indigo. 375

Induction coll, 207, 225, 279, 284, 37.5. 607.
693

Ingredients for good paint, 138

Insanity, 111

Insects, boring, 258; insects for (he
mieroscopo, 664

Instruments: ancient musical, 10 ; good,

Insulation of induction coll, 284
Interference rings round tho sun, 308
Internally-geared lathe, 348
International Exhibition, Workmen's 130

162 ''

Inverted pictures. 250, 308
Investigation of malaria. 497
Ireland, 307, 350; Ireland: geology of,

282; mid and wost 257
Iris diaphragm, 640, 587, 612
Irish moss. 542
Iron : cell. Slater's, 494; in batteries, 402,

447, 450. 622; ships, sheathing, 160;

Irons, sulphur in. 137
Irregular form*, cutting. 208
Isomotrical, 543; lsometrical drawing, 420

JOE BARNES and his Yorkshire .lab,

185
Jottings, microscopical. 493
July, temperature in, 497
Jumping from a train in motion. 130, 184,

211
Jupiter: belts of, 35, 134; colours of, 86;

Saturn and, 279

KAPPER'S improved fires, 17
Keeping the clock right. 02, 256
Kelsey's wedge-driving drums, 113
Keys of pianos. 80
Kitchener's tele .copes, Dr., 113

LABEL-MOISTENER, 130

Lactometer, 36

Latch, gate, 01

Lathe by George Plant 42; lathe-chuck,

solf-centerlug, 11; lathe for turning

bungs, 15; lathe, Internally-gcar d

3-18; lathe, the Nalfnlre, 102, 184, 208;
Lathe, screw-cutting, 259
Lathes, 88, 111, 282. 307, 329 333, 421, 448

474
Latitude of Venus, 379
Laws on patents, the, 331
"Lead" of slide valve In steam-engines,

214; lead-tree. 38
Least squares, on the method of, 38
Leaves, skeletonising, 566
Leigh's plan for crossing the Straits of

Dover, 323
LonBes: concave, 807; opera-glass, 135.
Level surfaces, tool for, 401
Lever of safety-valve, 448
Libel on British workmen, a, 161
Lifeboats; English Mechanic. 2.11

•' otter" for, 238; steam, 2.32, 279, 804
Light 35; light electric. 492: light of the

heavenly bodies, 282; light nature of,

643. 601; light Tyndall's experiments

on, 11
Lighting the National Gallery and British

Museum, 347
Lightning conductors, 644
Lines, Fraunhofer's, 114; lines iu BOlar

spectrum. 183, 211. 230, 256, 2,57, 279

282, 302. 329. 347, 378
Link motion. 301, 352. 355. 378, 426, 471,

•119. 641, 689
Literature, criminal. 03
'■ Little Wonder," the, 208
Lock-nut 10
Locomotive ashbox, 508; locomotive, road

253
Longitudo of Venus, 379
Low-water detector, 32-5
Lubricators, 166,185, 212
Lull's friction clutch, 869
Lunar: activity, 371; cosmology, 423, .119,

51.5, 610; craters, 233, 374, 468, 519;

motion, 54-5

MACHINES for: cutting irregular
forms. 208; electrical purposes, 14; fret-
sawing, 012; hand-planing. 440: magneto-
electric. 131t planing, 493; printing, 445;
punching, shearing, and stretching, 182;
reaping and mowing, 160; sewing 90
113, 1.17. 211, 231, 232. 2S0, 308, 374, 87.5,
,188; stoning cherries, 252
"Macclesfield" velocipede, the, 13, 89
Magnetism, 590

Magneto-electric machines. Slater's, 131
Mahoe-wood, blue. 111, 1.19, 160
Making: bread. 1.5, 03; camera, 396: cod-
liver oil, 49.5; gas, 474 ; sundials, 14. 02
Malaria, investigation of, 497
Mammoth. 490, 522
Man. pre-Adamite, 422
Manganese battery, 38
Manganic sesqul-hydrate, 377
Mauichord. the. 39'J
Manufacture of shoddy, 11, 59
Maninta arrow-root, 012
Materials for paper, 112
Mathematics. 250
Matrimony and big heads, 90
Mayo and Sllgo, 348
McCarthy and Cunningham's motive

power, 266, 3.51
Mean distance of the suu, 38, 80. 228
Measure and funnel, combined, 130
-Mechanical, .ISO: mechanical lingers, 80.5
Medallion turning, 017
Medical: coils, 693; galvanism. 281, 326;

opinion on bloycle-ridiug, 374, 308
Melting glue, .587
Mesmerism. 200
Method of least squares. 83
Meteoric stones. 017
Meteorites, 574, 587
Meteorological. 11, 379
Metronome. 101
Micromoter, bar, 379. 403
Microscope, the, 44-5, 474. 515, 56.5; miscro-

scope. Perry's, 2.53
Microscopic: accessories. 013; con-
denser, 303, 3-53; examination of ale,
522: investigation of malaria, 497
Microscopical: jottings, 493; society,

amateur, 017
Midland districts of Ireland, 257
Military education, 401
Milk, 36

Milky Way. thoorv of, 211
Millers, questions for. 10. 11, 30, 59. 87.
112, 133. 182, 220, 241, 278, 332, 351. 373.
378. 403, 423. 426
Mills, sugar, 861

Millstones: balancing, 426; dressing, 227
"Miltonian" bicycle, the, 352
Mine, rock-salt 35.1
Miner's appeal, a, 307. 326. 350, 593
Mitrailleuse, the Fronch, 515
Moa or dmornis, the, 212, 220
Model engine, pump fur, 157
Moistening labels, 130
Momentum and attraction, 444
Moncrieffe gun-carriage, 504
Monoxide, carbon, 250
Monster harmonium, 451
Moon -. illuminated portions of, 11, 03;

motions of, 210, 2.57
Mordan's self-centering wire chuck. 644
Moss, Irisli, 642

Motion: link, 301. 352,3-5-1. 378. 426.471,
519. 541, 589; lunar, 615; motions of the
earth, 89. 134, 1.59. lid, 163. 182. 209.
212. 234, 257, 308; motions of the moar
and earth, 210, 257

I Index To Vol. XI.

Motive power: electro magnetism Oh n,

670; Improvements in, 266, 351; for

velocipede, 497
Mounting: Insects for the microscope, 564;

planing machine. 493; telescopes, 158

Movements, wing, 282

Mowing machine, Allen's, 156 J

Mushroom culture, 400

Music. 308, 832, 349, 445, 494

Musical, 445, 494; musical instrument,

ancient, 18; musical Instruments, 346;

musical notation, 68, 227, 496, 544

Mutual improvement societies, English

MaCHANIC, 89, 130, 159, 187

NAMES or constellations, 446

National Gallery, lighting, 847

Natural science in military education, 401

Nature of light, 543, 564

"Nautical Almanack," the, and " F.R.A.S."

14. 36, 58

Necdham's starter for sewing machinea.232

New: carriage brake. 64; lathe, 421;

paint, a, 61; planisphere, 210; process

of gas-making, 474; style of railway, 277

Ktnety miles a day on a bicycle, 137

Nitrate of silver. 690

North of Ireland, 350; North Wales, 37C

Northwich salt mine, 355

Notation, musical, 58, 227, 496, 545

Notes, astronomical, 450, 563

Numerals, Koinan, 446

Nut, lock, 16

OATS, crushed, 04

Object-glasses. 40, 185, 252, 282, 333; ob-

jects, test, 63

Observations, astromomlcal. 234, 518, 613

Obtaining motivo power, 256, 351

Occultation of Saturn. 136

Oil cod-Uver. 495, 542; oils and fats,

vegetable, 331, 347, 379

Old: cottage and cabinet pianos, 41; files,

renovating. 230; music, 308

Opcra-glaBS lenses, 135, 185

Opinion on bicycle riding, medical, 374.398

Optical, 277, 828, 423, 586; "Optical Brick-

layer's " telescope, the, 378, 423

Orders, Post-office. 494

Organ, the, 38. 88. 112. 138, 139, 185, 228,
234, 279, 618, 569, 614; organ-blowing,
228; organ-pipes. 110, 160, 330; organs,
free-reed, 618, 669, 614

Origin of meteorites, 587

Orthotoptics. 305

"Otter" for lifeboat service, 233

Oxygen, 616

Oxyhydrogen gas stove, 41

PAINT, 138; paint, a new, CI

Painting: cistern, 690; dissolving views,
472; fresco, 497

Paper, materials for, 112; papers, clip for,
284

Parabolising specula, 37,135

Paradoxes in equations, 88

Parallax, sun's, 402, 425, 474

Parallelogram of forces, 375

Paris defences, the, 693

Patent: engine lubricator. 156; laws, the,
331; lubricator. Turner's, 185, 212; ro-
tary spader, Comstock's, 64; starter
for sewing machines, 202; wedge-driv-
ing drums, 113

Peculiarity in eyesight, 306, 332

Pedestrian tours, 423

Pendulums, 90

Percentage of sulphur In Irons, 137

Performance of speculum, 307

Perry H microscope, 263

Personal, 346

Perspective, 332 ; perspective drawing, 397

Petersen's steam lifeboat, 279, 804

"Phantom " veloce, the, 667; "Phantom"

wheel, the, 87, 115,137, 163, 256, 303, 328,

495, 567, 616

Philosophy of the English Mechanic, 517

"Phoenix" velocipede, the. 426

Phonographv. 308, 328, 354, 372, 400, 418,

521, 668, 6J7

Phosphorus, powdering, 10

Photographic. 59, 182, 279. 307, 308, 045,
591; photographic tent, 520.

Photography, solar, 473

Photoscope, the 377

Phrenology, 40, 90. 254, 325. 447

Pianoforte, the, 304, 4«9, 496; pianoforte,
history of, 446, 469; pianoforte keys,
covering, 86; pianoforte, upright, 398

Picric acid, 688, 690

Pictures: electric light for, 492; inverted,
■'.',(; 308

Pipes', organ, 110, 139, 160. 330

Pitch of harmonium roods. 471

Pitman's phonography, 80S, 328, 354, 372,
400, 448, 521, 568, 617

Plan for crossing the Straits of Dover
Leigh's. 323

Planet Vulcan, the supposed. 35, 84, 137

Planing machines: hand, 446; mounting
493

Planisphere, new, 210

Plant's lathe. 421

Plant, zinc, 38; plants, cross-breeding, 378

Plato, dividing. 114; plate, division, 612;
plates, exposure of, 545

Platinised: gauze battery, 211; specula, 111

Plato, spots on. 518, 613

Playing the flute. 402, 475, 515, 693

Pki'mliago v. platina crucibles, 183

Pinto, the lunar crater, 283

Point movers, 355

Poisonous postage stamps, 15, 35

Puiaiiscope, the, 468

Pomology and floriculture, 332, 379, 497

Purt Jackson. y73

Position of occentrics. 400

Puat-ofllee: orders, 494; telegraphs, 2S0

Postage stamps, poisonous. 16, 35

Potato dibble, 156; potato-growing, 353

Powdering phosphorus, 10

Power, accumulating. 353, 425; power
and aperture of telescopes, 14: power of
boiler, 690: power, horse, 543,591; power,
motive, 256, 351; power, screw, 692, 611;
powers of blocks. 425; powers of sub-
stances to resist the electric spark, 135

Practical telegraphy, 401

Pro-Adamite man, 422

Preserving: fruit, 450; musical Instru-

ments, 346

Press, bookbinders' cutting, 64

Pressure: barometric, 444; steam, 688;
unequal steam, 397, 422

Preventing rust, 279

Priming of boilers, 543

Printing machines, 445

Problem, arithmetical, 227; problems, 331

Process of gas-making, new. 474

Propellers: Fothergill's 12; screw, 612,

617; steam, 265

Propelling a vessel by a windmill, 587

Psychology, electrical, 113

Pulleys, Kelsey's, 113

Pumps: air, 202, 305. 325, 375. 396,445, 494;

model engine, 167; Sband'B steam, 85;

ships', 423

Punching and shearing machine. 132

Purification of: chloride of silver, 10;
feathers and hair, 395

QUADRATICS rcduciblo to quad-
ratics, 210

Quantitative analysis, 87

Querists and contributors, 546, 587

Query, engineering, 39

Questions: curious. 378, 618. 54(1, 532, 610;
examination. 309; for millers, 10, 11,
36. 59. 87. 112. 133. 182. 220, 254, 278,
332, 351, 373, 378, 403, 420, 426

EAILWAY trains across the Straits of
Dover, conveying, 323; railway travel-
lers, comfort for, 864

Railways : Brazilian. 371; street, 277

Rain, artillery and, 448. 495, 545

Reaction of currents, 396

Readings from the globes, 208, 252, 278,
829. 352, 872, 421, 472, 618. 542, 688

Heaping and mowtngmochinc, Allen's, 166

Rebuilding organ, 279

Reclining sundial, 62

Recreations, Bath Forum. 354

Rectifying the circle, 376, 468, 522, 645

Reed organs, free, 518, 569, 614; reeds,

harmonium, 41, 90, 471

Reflecting telescope, 111

Reflectors, dew caps for, 257; reflectors
and refractors, 10, 42

Refracting telescope. 135

Relation of power to apertures in tele-
scopes, 14

Remains, Indian architectural, 1C0

Remarkable old musical.mstruxneut, 16

Remarks on slot-cutting, 112

Renovating old HiTM, 230

Resistance to electric spark, 130

Rhea grass, 114

Biding bicycles, 374, 398, 426, 494, 521,

543, 660, 092, 614

Rifles : Chassepot, 417, 594: Soper, 138,206

Rimer, drill, and tap, combined, ill

Rings : round the sun, 308; of Salum, 449

Road : locomotive, 253; steamer, 37; roads,

English, 65, 89

Roberts's galvanic battery, 300

llocksalt mine, Northwich, 305

Rods, Ushing. 400

Roman numerals, 446

Ropes, strength of, 425

Rotary: engine, 61, 114; Bpader. 04

Rotation of the earth, 134,109, 161, 284

Rudge'B air-pump, 494

Rushes, 185, 207

Rust, preventing, 279

SAFETY-VALVE, 279, 325, 302, 418

Salads, 159, 305, 32C

Saleable upright pianoforte, 398

Salt mine, Northwich, 300

Saltairo lathe, the. 1G2, 184, 208

Satellites of Uranus. 022. 540, 591 610

Saturn: 130, 449, 494; Saturn and Jupi-

ter, 279 F

Scale in steam boilers, 230

Scarborough, 824

Science: natural, In military education,

401; summer. 325; science for the

young. 257, 283

Scientific education, 570

Scotland. 324, 376

Scraper for boilers, elastic, 491

Screw-cutting lathe, 202: screw chuck,

159; screw-In chuck. 184 : screw power,

692, 611; screw propellers. Fother-

gill's, 12; screw propelling, 612, 617

Sea-sickness, 87

Secret code for telegrams, 423

Sections, conic, 446, 474, 497

Self-acting: blowpipe, 300: feed-water

heater, 309; self-centering chucks, 11,37.

044 ; self-feathering screw propellers, 12

Sentence, curious, 423, 469, 4!»7

Sesqui-hydrate. manganic, 377

Setting eccentrics, 403

Sewing machines. 90, 113. 157, 211,231,

232. 2*0. 308, 374. 370, 088

Shand's Improvements In steam pumps, 84

Shearing, punching, and stretching

machine, 1:12

Sheathing iron ships, 160
Shells, concussion, 136
Shewau's spiral water-wheel. 107
Ships' pumps. 423: ships, sheathing. ICO
'■ Shiptonian" velocipede 203

Shoddy manufacture, 11, 59

Shorthand, 260, 281, 308, 328, 304, 372, 400,

448, 021, 568, 617

Sickness at sea. 37

Silk bolters, 403

Silver: chloride of, 10; nitrate of, 090
Silvering: clock-dials, 587; i-pecula, 163,

211.233

Simultaneous equations, 169, 226, 284, 306

Singing, 308

Skating, summer, 326

Skeletonising leaves, 666
Slab, Yorkshire. 185

Slater's iron-cell, 494: Slater's magneto-
electric machines, 131

Sleep, 115

Slide screw-cutting lathe, small, 202;

slide-valves, 254, 689

Sligo and Galway, 348

Slot-cutting, 112, 162. 184
Small drills, tempering, 853; small slide

screw-cutting lathe, 202

"Smith" turn-buckle, the, CI2

Snuff and tobacco, 091

Soda crystals. 10

Soft-voiced organ-pipe. 160

Solar photography, 473: solar spectrum,

lines in, 183, 211. 230. 256, 207, 279, 282,

302. 829, 347, 378

Solutions: chemical, 206; standard, 474

Super rifle, the, 138, 256

South Kensington: examination papers,

590; musical instruments at. 340

Space for strings in the piano. 352

Spader, Comstock's rotary. 64

Spark, resistance to electric 135

Specimens of turned work, 372

Spectroscopics!. 323
Spectrum:analysis,306,Ml; solar. 183. 211,

280, 256, 257. 279. 282. 302. 329. 347. 378
Specula: parabolising. 37, 135; platinised,

111 ; silvering, 163, 211, 233
Speculum: grinding. 62, 284 : performance

of, 307; testing, 328: working. 611
Spinning-cotton. 111. 133, 136. 162. 182,

204, 230, 254. 283. 302. 330, 350, 403
Spiral water-wheel, 157
Sportsman's velocipede. 349
Spots: on Plato, 518. 613; on the sun, 396
Spring velocipedes, 514
Square bar micrometer, 403; squares,

method of least. 38

Squaring the circle, 300, 326, 300, 301, 376.

424. 446. 612

Stained-glass, 114
Stamps, poisonous postage, 13, 30
Standard solutions, 256
Starch, 185. 395; starch and chicory. 161
Stars: colours of. 266; decllnatiou of, 20C
Starter for sewing-machines. 232
Startling theory about Jupiter and Saturn,

279

Steam-boat travellers, comfort for, 86;

steam-boiler feeding. 204.369; steam-

boilers, scale in, 230; steam-carriages,

304. 329; steam-engine lubricators. 106,

180. 212; steam fire-engines, 84: steam
hammers, 326; steam lifeboat. 232, 279,
304; steam pressure. 088; steam pres-
sure, unequal. 397, 422: steam propellers
for vessels, 200; steam ami water, led
Steamer, road, 37
Steering vessci, 36
Step for bicycle, 614
Stereochromy, 497

Stevens's Improvements in cooking, 00
Stone and brick drill, 188; stones, meteoric,

617

Stoning cherries, 202

Storms, cause of, 403

Stove, oxyhydrogen gas, 41

Strains on girders. 10

Street railway. 277

Strength of chains, 1C3, 186, 207, 254;

strength of ropes, 425

Stretching, shearing, and punching ma-

chine, 132

Strikes, 329

Striking handrail scroll, 425

String space in the piano. 302

■Substances, power of to resist the electric

spark, 135

Sugar-mills, 351

Suggestions, 228, 492

Sulphur In irons, 137

Summer: science, 325 ; skating. 326

Sun. the, 64, 545 ; sun-dials, 14, 62; sun-

flower, the, 114, 162, 186; sun, fuel of,

160. 203. 220: sun mean distance of. 38.

86, 228; sun's parallax. 402. 420, 474:

sun, rings round the. 308; sun spots, 3iHi

Supposed planet Vulcan, the, 30, 84, 137

Surfaces, Inclined and level, 401

Suspension-wheels, 61(1

Swimming a summer pastime, 426

Swinging-gate, latch for, 61

TACKLE for fishing, 450

Taking cod-liver oil, 495

Tangents and angles. 308, 351

Tap, rimer, and drill, combined, 111

Tea for the million, 617

Teeth, wheel, 327

Telegrams, secret code for, 423

Telegraphs. Post-office, 286

Telegraphy, practical, 401

Telescope construction. 204. 201 : tele-

scopes ; achromatic 110: Hcrsehelian,

563; Kitchener's (Dr.). 115; reflecting,

111 : refracting, 130, 211

Telescopic, 13, 14. 10. 34. 85. 110, 130, 10a

182, 203, 211, 284, 261, 370, 378, 423, 472,

542, 546

Temperature in Juno and July, '69 and

'70, 403, 497

Tempering small drills, 353

Tender feet, 090

Tent, photographic. 020

Test for arsenic, 1U ; test objects, C3;

tests, 185

Testing: boilers, 282; speculum, 328

Thames, the. .103

Theoretical, 093, 610

Theory, the germ, 258. 307; theory of

Jupiter and Saturn, 279; theory of tho

Milky Way, 211; theory of the tides,

134; theory of wing movements, 282

Thermometers, 687

Tido table, 207; tides, theory, 134

Timbre of harmonium reeds, 41

Time, 86, 130, 186

Tobacco a9 a preventive of consumption,
091

Tool-holder, 209; tool for level surfaces,
401; tools for grinding object-glasses, 333

Tourists' trips, 307, 324, 349, 376; tours,
pedestrian, 423

Trade and commerce, 161, 184, 206, 209,
227, 207, 278, 306, 326, 329. 351. 375. 378

Train, jumping from, 130, 184, 211; trains
across the Straits of Dover, conveying,
323

Tramwav, wire, 228

Tree, lead, 38

Tricycles, 184, 308. 46S, 496

Trips, tourists', 307, 324. 349, 376

Trisection of angles, 89, 207, 329, 370

Tube scraper, 491

Turn-buckle. Smith's, 612

Tumod work. 372

Turner's lubricator, 185. 212

Turning. 234; turning bottoms for cy-

linder covers, 621; turning bungs with

f'jot-lathe, 15; turning medallions, 617

Turret-clocks, 16, 63, 83

Twilight 329

Tyndall's experiments on light, 11

UNEQUAL steam pressure, 397, 422

Unfair criticism, 874, 401, 426, 446

Universal clothes-washer. 228

Unknown coal-measure fossil, 612

Upright pianoforte, 398

Uranus, satellites of. 622. 540, 091, 610

Use of the telescope, 201; uses of the

lathe. 329

Useful tool for level surfaces, 401
Utilising power, 303, 420

VACUUM in air pump, 202, 305

Valves: Hopklnson's, 12; "lead" of.
204 ; safety, 279, 325. 302, 448; elide. 089

Variations in barometric pressure, 444

Varnish, violin, 14, 39. 62. 227

Vegetable oils and fats, 331, 347, 379

Veloce, the " Phantom," 667

Velocipede construction, 210, 374; veloci-

pede wheel, the "Phantom." 206: ve-

locipedes ,131,206.326, 329; velocipedes:

"English," 60. 89, 230: four-wheeled.

330, 021; "Macclesfield." 10. 89; mo-

tive power for, 497; "Phionll," 426;

"Shiptonian," 203; sportsman's, 349;

spring, 014

Ventilation : buildings, 306, 332; collieries,

11: hygiene or, 210

Vessel propelled by a windmill, 682;

vessels: building and steering, 36

steam, 200

Vibration of violin bellies. Ill

Victoria, emigration to, 37 s

Views, dissolving, 472

Vine culture, 093

Violin bellies, 111; violin varnish, 14, 39,

62, 227

Voicing wooden orpnn-pipes. 110

Vulcan, the supposed planet. :10, H4, 137

Vulcanising iudia-iubhcr, 046

WAGES, 329

Wales North, 376

Walking, 494, 614

Wall decoration, 473, 497

Ward's flute. 468

Water: analyses, 187, 234. 253, 282, 303,
377; barometer, 896; convexity of, 262;
feed, 301, 329, 610; gauge and gauge-
cock. 60; water-heater, llarton'a, 369:
water and steam, 181: water-wheel, 228

Wedge-driving drums, Kelsey's, 113

Weights of chemical solutions, 474

West of Ireland, 207

What is a manichord. 399; what we owe

to the alchemists. 616

Wheel-cutting engine, 12; wheel-stones,

282; wheels: carriage, 490; fairy. '-'33,

208; fly, 301; friction, 446; "Phan-

tom," 87, 110, 137, 163, 206, 303, 321.

490, 567, 016; Shcwan's water, 15":

spiral water, 107; suspension, U1C;

water, 228

Windmills. 14, 40, 450. 490 ; windmill for
propelling vessels. 087

Window cleaning, 0H7

Wing movements, 282

Wiro-chuek, self-centering. 044 : wire for
electro-magnetic apparatus, 180; wire
tramway at Brighton, 228

Woisi for fishing rods, blue mauoc, III,
109. 160, 162

Wooden orgsn pipes, 110, 139

Work, turned, 872

Working granite in ancient times, 1(.;
working men and the patent laws, 331;
working speculum, 611

Workman's appeal, a, 881, 349; workmen s
exhibitions: Belfast, 257; '■■•■■■■<
tlonal, 130. 162

Workshop accidents. 473

Wrav's object-glasses. 40. 252

Writing, hand, 469, 010, 040

YEAST, 15

Yorkshire slab, 185

Young, science for the, 257, 283

ZINC plan', 33

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