ABSOLUTE pressure, 15.

Accidents to workmen, 417, 418.

Accumulator, the, 112.

Acid test for gold and silver, 335.
for iron and steel, 340.
test for steel, 246.

Acid-proof cements, 348.
Actual horse-power of boilers, 167.
horse-power of engines, 5, 14.
horse-power of pumps, 95.
horse-power of shafts, 142.
of rope-gearing, 123.

of wheel-gearing, 126.

Adamson's flanged seams, 164, 178.

Adhesive power of locomotive engines, 66.
Admiralty gun-metal, 231.

Admission line of diagrams, 10.
Advance of the cut of tools, 210.

Air admitted above the fire in boilers, 165.

cooling of pipes by, 202.

for apartments, 204.

for barracks, 204.

for candle-burning, 204.

Aluminium bronzes, weight of, 314.

bronze, 229, 314, 324. 370.
drilling speed for, 209.

nickel, weight of, 314.

sheet, weight of, 311.
solder, 238.

tubes, weight of, 312.

Angle iron beams, 267.

iron, length to make a hoop, 292.
iron, strength of, 324.

iron, weight of, 294.

of clearance of lathe tools, 210.

of cutting of lathe tools, 210.

of lathe centres, 210.

of safety-valve seats, 184
steel, weight of, 296.

Angular velocity, 120.

Animals, power and weight of, 4.

floor and cubical space for, 204.
tested performances of, 408, 410.
Annealing metals, 244, 245.
Anti-corrosive metal, 232.

-corrosive paint, 354.

-friction grease, 345.

-friction metal, 234, 235.

for churches, 204.

for coal-burning, 187.

for hospitals, 204, 205.

for mines, 205.

309.

for oil-burning, 204.

for prisons, 204.

for public buildings, 204.

per head, 204.

for respiration, 204.
for transpiration, 204.
for ventilation, 204, 205.
-pumps, 55-58.
pump-efficiency, 58.
-pump valves, 58.

vessel for pumps, 91, 95.

warm, for heating, 203.

weight of, 205.

Air, increase of volume of, by heat, 205.

mean temperature of, 412.

properties of, 412.

Alloys, for fusible plugs, 235.

fusible, 235, 236.

melting point of, 236.

of copper and tin, 229-233.
of tin and copper, 234, 235.
specific gravity of, 326.
strength of, 229, 230, 324.
various, 229-235.
Aluminium, 311-313, 326, 337.
brass, weight of, 314.

-friction metal plates, weight of,

-friction metal tubes, weight of,

318.

-rust metal, 232.

metals, weight of, 309.

Antimony, 325, 336.

Antique bronze, 242.

Application for patents, 415, 416.

Approximates, decimal, 406, 407.
Aquarium cement, 348.

Area of chimneys, 187.

of cylinders, 38, 63, 69.

of cylinders for compound engines,

63.

Bands, cotton, 155.

leather, 154, 155.
rope, 125, 126.
wire-rope, 156.

Band-saws, speed of, 212.

Band-saw blades, strength of, 212.
Barrels, contents of, 329.
Beams, angle iron, 267..

cast iron, 264, 268.

flitch, breaking loads on, 273.
wood, 264.

wrought iron, 265.

Bearings, alloys for, 229-232.
anti-friction, 234, 235.
friction of, 66, 138, 139.

metals, various, 229-235.

pressure on, 143

of shafting, distance between, 142, 144.

of water-wheels, 107.

self-lubricating, 345.

Bed, engine, 49.

Beech, strength of, 325, 370.

Bell clappers, 233.

metal for small bells, 233.

metal for church, &c., bells, 233.

Bells, thickness of metal of, 233.
weight of, 233.

Belts, cements for, 353.

cotton, strength of, 155..

dressing for, 346.

for damp places, 156.

friction of, 156.

india-rubber, 156.

linen, 156.

leather, rules for, 154, 155.

leather, strength and weight of, 155.

pulleys for leather, 151–154.

pulleys for rope, 126.

pulleys for wire rope, 156.,
rope, 126.

waterproof, 156.

Bends in water-pipes, effect of, 109.

Bessemer steel, 101, 250, 260, 291, 338.

steel, weight of, 291.

Bevel wheels, power of, 123, 127.
wheels, proportions of, 116.
wheels, to project, 117.
wheels, weight of, 127.

B. G. gauge for sheet and hoop-iron, 289.

Bills of exchange, notes on, 414.

Birmingham, Stubs, American, and French,
wire-gauges, 304.

wire gauge, weights of metal to, 305.

Bismuth, 237, 336.

Bismuth solders, 237.

Blackboards, paint for, 354.

Black finish for brass work, 241, 242.
Blast of fans, 213.

Block-tin tubes, weight of, 286.

Blueing and colouring metals, 240, 241, 242.
Bogie engines, 71, 73.
Boilers, 161-193.
blowing-off, 192.

bursting-pressure of, 179, 180.
care of, rules for, 190.

cements for covering, 112, 352.
Boiler chimneys, 171, 187, 188.
Boilers, collapsing pressure of, 179, 181.
Cornish,proportions and weight of, 169.
dished ends of, 166, 174.
dome, 167.
egg-ended, 166, 174.
ends, 163.

evaporation, 161.

factor of safety of, 179.
feed, position of, 166.
fire bars, 189.

firing instructions, 190.

Boiler fittings, 165, 190.

Boilers, flat surface staying, 165, 166.

Boiler flues, 165, 187.

flues, collapsing pressure of, 179, 181,
furnace, mounting, 165.

heating surface, 167.

Boilers, horse-power of Cornish, 166.
horse-power of egg-ended, 166.
horse-power of Lancashire, 166.
horse-power of vertical, 167.
hot water, 203.

Boiler incrustation, 189.

Boilers, Lancashire, 160-169.
locomotive, 72-76.

Boiler-plates, iron, loss of strength of, at
high temperatures, 261.

plates, nickel steel and carbon steel

compared, 339

plates, iron, strength of, 176, 259.
plate iron, testing, 260.

plates, iron, weight of, 282, 289.

plates, steel, 176, 260, 291, 339.

Boilers, portable, proportions and weight

of, 172.

return tube, proportions and weight
of, 173.

Boiler rivets, pitch of, 280.

rivets, test for, 261.

rivets, weight of, 303.

Boilers, riveted joints of, 176, 177, 178,
280, 281.

rules for the weight of, 174.

Boiler safety-valves, 182-186.

scale, 189.

setting, 165.

shells, 161, 162.

Bolts, nuts and washers, weight of, 283.

for foundations, 284.

strength of, 284.

weight of, 283.

Bore of guns, size of, 302.

Boring machines, 211: power for, 330.

metals, speed for, 208, 209.

Brake-Horse-Power, 5.
Brakes, friction, 5-8.
Brands of pig iron, 227.
Brass, alloys, 229--232.
aluminium, 312.

bars, weight of, 229, 301.
black finish for, 241, 242.

bronzing, 242.
burnishing, 239.

casting, 228, 229.
colouring, 242.
dipping, 242

effect of rolling, 230.
finishing, 239.
foundry, 228.

foundry receipts, 344.
furnace, 228.

lacquering, 242, 243.
malleable, 230.

melting, 228.

mixtures of metal for, 229-232.

naval, 232, 306, 307.

polishing, 239.

red, 232.

371.

strength of cements and concrete for,

strength of bricks for, 371, 372.

working loads on foundations for, 369.
working loads on metals and woods
for, 370.

Bulk or stowage capacity of various mate-
rials, 328, 329.

Burnishing steel and other metals, 239.
Burns, and accidents, 417.

Bursting pressure of boilers, 179, 180.
pressure of cylinders, 101.

pressure of hydraulic cylinders, 111.
pressure of lead pipes, 294.

Bursting pressure of spherical shell, 179.
pressure of water pipes, 101, 102.
pressure of pipes and cylinders of
various metals, 101.

Bushes, special metal for, 229-232.
Butt-strips and butt-joints, 281.

chilled, 227.

columns, 278, 279.
composition of, 366.
cylinders, metal for, 227.

cylinders, weight of, 297, 298.
fire bars, 189.

girders, 267, 268.
pillars, 279.

pipes, bursting pressure of, 101.
pipes, notes on, 102.
pipes, rules for, 101, 102.
flange pipes, weight of, 103, 104
plates, weight of, 292, 300.
socket pipes, contents of, 105.
socket pipes, lead for joints of,

102.

socket pipes, pressure in, 102.
socket pipes, testing, 102.
socket pipes, weight of, 103.
strength of, 101, 102, 226, 324,
370.

various mixtures of, 227.

weight of a square foot of, 292.

Cast-steel castings, 127, 370.
Casting brass and gun-metal, 228.
Casting iron, various mixtures of metal for,
227.

iron, foundry receipts, 344.
Castings, brass and gun-metal, 228, 229.
contraction of, 359.

measuring patterns for, 276.

rules for finding the weights of, 275.
steel, 127.

Cementation, 338.

Cements and concrete for buildings, strength
of, 371.

for cast-iron, 353.

for the laboratory and workshop,

over 100 in number, 348-352.

Centre of gyration, 120.

Centre-weighted governors, 32, 33.

Centres of lathes, 210.

of rivets of boilers, 280.

of rivets of girders, 269.
of stay-bolts, 166.

Centrifugal force, 30: of fly-wheels, 52.

pumps, 96.

Centripetal force, 30.

Chains and ropes, 262-264.

Change-wheels, tables of, for screw cutting,

219-225.

weight of, 295.

saws, speed of, 212.

Circumferential velocity, 120.

Cisterns, contents of, 86, 87, 331, 332.
cements for, 353.

stock sizes of, 331, 332.

Clay covering for pipes, &c., 112, 318.
Cleaning boilers, 192.

brass and silver, 344.
Clearance in cylinders, 20, 42.
Cloth, to waterproof, 346.
Clothing for cylinders, 39, 347.
for pipes, 112, 352.

Coal, 160, 360.

Cocks, proportions of, 97.

and valves for steam, metal for, 231.
and valves for water, metal for, 231.
Coinage, 335.

Coins, metal for, 233, 335.

weight of, 335.

Coke, 161; for melting cast-iron, 208.
Collapsing pressure of boiler flue tubes,
179-181.

Colouring drawings, 357.

metals, 240-244.

Column of water, weight of, in pump
barrels, 98.

Columns, hollow, 279.

of water, 86, 90, 98, 105.
solid, 279.

Combustion of fuels, 160.

Composition for covering steam boilers and
pipes, 112, 352.

for scale in steam boilers, 189.

for taking impressions and casts, 344.
of fuels, 160.

of glass, 366.

of iron, 366.
of lacquers, 243.

of paints, 354.

of sea-water, 194.

of slag of furnaces, 367.

of steel, 339.

of water, 85.

of varnishes, 354, 355.

Copper, alloys of, 229-232.

bars, weight of, 301.
blanched, 233.

bronzing, 242.
casting, 229.

flanges for pipes, alloy for, 232.
notes on, 317, 335.
pipes, weight of, 310, 316.
plates, weight of, 290, 292, 305.
sheets, weight of, 290, 292.
speed for turning, 209.
strength of, 229, 317, 324, 370.
tubes, 310, 316, 317.
tubes, hardened, 317.
tubes, strength of, 317.
tubes, weight of, 310, 316.
- wire, strength of, 324.
Cord of wood, 194, 369.
Cornish boilers, 162-169.
boilers, contents of, 168.