Lead pipes, weight of, 294, 295.
required for pipe joints, 296.
sheet, strength of, 325.

sheet, weight of, 291, 303, 305.
Leaky pistons and valves, 20.
Leather, cements for, 350, 352.

belting, strength and weight of, 155.
belts, cements for, 353.
belts, dressing for, 346.
belts, horse-power of, 155.
belts, rules for, 155.
Left-hand screw-threads, 222.
Legal memoranda, 414, 415.
Length of boilers, 162.

of stroke of engines, 42.
of stroke of pumps, 96.
Lift of centrifugal pumps, 96.
of hydraulic rams, 97.
of pumps, 91.

of safety-valve, 184.

Lightning conductors, 188.
Lignum-vitæ, strength of, 370.

Limits of velocity in rivers, &c., 110.

Line of back pressure in diagrams, 10, 12.
Linen belting, 156.

Links of chains, proportions of, 264.
Liquefaction, latent heat of, 198.

Liquid fuel, 161.

Liquids, expansion of by heat, 198.

specific gravity of, 327.

weight of, 327, 329.

List of chemical and mineral substances,

365-367.

of French words for English engineer-

ing terms, 372-394.

of minerals, 364, 365.

of woods, and their uses, 341.

Live loads, 264, 265, 270.

Load to be overcome in pump barrels, 98.
Loads, live and dead, 264, 265, 270.

working, on materials, 369, 370.
Locomotive engines, adhesive power of, 66.
compound, 75.
cylinders of. 69.

metallic packing for piston-rods of, 70.
Locomotives, effective pressure of steam in,
and various rules for, 66-71.

express passenger engines, 71-76.
power of, 67, 68.

resistance on rails, 67.

weight of, 73-76.

Logarithms, hyperbolic, 18.

London, Brighton, and South Coast Rail-
way express locomotive engine, 73.
Longitudinal expansion of internal flue
tube, 164.

Longitudinal seams of internal flue tubes,
164.

Longitudinal stay-bolts of boilers, 163.

strain on boiler shells, 162.

Lost bills, 414.

Lowest absolute terminal pressure, 21.
Lubricant for steam-cylinders, 41.

wheels, 127.

Machine tool work, 211.

tool work, cost of, 218.

Machine-tools, power required for, 330.
Machined work, cost of, 218.
Machinery, depreciation of, 359.
- oils and grease, 138, 345.
painting, 354.
power for, 330.
refrigerating, 207.

Mahogany, strength of, 325, 370.
Malleability of metals, 237.
Malleable cast iron, 245, 337.
Manganese bronze, 308, 370.
steel, 310, 338, 370.

Manhole of boilers, 164.

Marble, to clean and whiten, 347.
Materials, strength of, 101, 102, 123, 155,
156, 177, 178, 226, 229, 230, 259, 279,
284, 293, 294, 324, 325, 370, 372.
Mean annual rainfall, 413.

effective pressure of steam, 15, 63.
pressure of steam, 15.
temperature of air, 412.

Measures, French, 395-403.
Measuring patterns, 276.
timber, 343.

Megass fuel, 161.

Melting point of metals, 236.
Memel-beams, 273.

strength of, 370.

Memoranda, hydraulic, 85-87, 110.
foundry, 226, 228, 344.

legal, 414-415.

Men, power of, 4: performances of, 408, 410.
Mercury, melting and boiling points of, 236.
Metal, anticorrosive, 232.

antifriction, 234, 235, 309.
expansive, 49.

for anvils, 227.

for bearings, 229–235.

for bells, 233.

for brass and bronze castings, special

mixtures of, 229-233.

for brass boiler tubes, 231.

for brass bolts, 231, 232.
for bushes, 229-235.

for chilled rolls, 227.

for cocks and valves, 231, 232.
for cylinders, 227.

for jewellers, 232.

special mixtures of, for iron castings,

227.
Metallic packing, 41, 70.

NAVAL brass, 232, 306, 307.
Naval-brass tubes, weight of, 319.

Necks corners of, 143.

of shafts, 143

Nickel, 336.

-aluminium, 314.

-bronze, 308.

steel, composition and strength of,

339, 370.

various alloys of, 235.

Nitrogen, 160, 273.

Nominal horse-power, 5.

horse-power of boilers, 166, 167.

horse-power of crank-shafts, 141.

horse-power of engines, 5.

horse-power of leather belts, 155.
horse-power of pumps, 95.

Non-conducting material for clothing
pipes, 112.

-conducting material for clothing
steam-cylinders, 347.

--conducting material for covering
pipes, 112.

-conducting material for covering
steam-boilers, 352.

Nuts, lock, 284.

rusted, to remove, 345.

Whitworth's standard size, 285.

Momentum, balancing, 38.

Mortar, 368, 370.

Mortice-wheels, 118, 123, 127.

Mouthpiece of boiler furnaces, 165.

Movement of piston and slide valve, 23, 24.

Mudholes of boilers, 165.

Muff couplings, 145, 146.

Mules, power of, 4.

Muntz metal, 230, 307.

Paints, anti-rust qualities of, 340.

Paper, sizes of, 357.

varnish for, 356.

Passenger locomotive engines, 71-76.
Patent law, the, 415, 416.

Pattern-makers' varnish, 356.
Patterns, measuring, 276.

Peat, evaporative power of, 161.

heat, bulk, weight, and composition
of, 360.

Percentage of carbon in steel, 248.
Perforated baffle plate for boiler fronts,
165.

pipe for feeding boilers, 166.
Perforations in slide valves, alloy for
filling, 234.

Performance of men and animals, 4, 403-
410.

Phosphor bronze, 101, 230, 324.
Pig iron, brands of, 226.

mixtures of, 227.

stowage of, 329.

Pillars, hollow, 279.

rules for strength and weight of, 279.
solid, 279.

Pine, pitch, red, white, yellow, strength

of, 370.

Pipe bends, effect of, 109.

coverings, 112, 352.

Pipes, brass, 309, 315.

emission of heat from, 206, 207.
expansion of, 204.

for gas, 104, 254, 319.
for hot water, 201, 202.

for steam, 29, 40, 101, 104, 319.
for water, 89, 102, 103, 109, 319.
gun-metal, weight of, 317.
hydraulic, 254.

naval brass, weight of, 319.
pressure in, 105.

steam, condensation in, when cooled

by water, 205.

steam, heating water by, 206.
steel, weight of, 321-323.
white metal, weight of, 318.
wrought-iron, weight of, 318-320.

Pipes bursting pressure of, 101, 102.
contents of, 87, 105.

-

cast iron, proportions and weight of,

Pistons, 42, 43.
leaky, 20.

rings, 43.

rings, alloys for, 43, 231.
rod, 41

packing for, 41, 70.

speed, 38, 62, 70.

Pitch of rivets in boilers, 280.
of rivets in girders, 269.

of spiral springs, 186.
of wheel gearing, 116, 119.
Pitch-pine, strength of, 370.
Planing machines, feed of cut, 210.
machines for wood, speed of, 212.
machines, power for, 330.
work, 211; cost of, 218.
Plate-bending machines, power for, 330.
Plates, strength of, see Tensile and Com-
pressive strength.

brass and copper, weight of, 290, 292.
cast iron, weight of, 292, 300.

of steel, 260, 261, 282, 291, 292, 305.
of various metals, weight of, 292, 305.
tin, 292. 302.

wrought iron, weight of, 282, 289, 305.
Platinum, specific gravity of, 272.
Plumbago, crucibles, 344.

lubricants, 344.

Plummer blocks, proportions and weight
of, 143, 149.

Point of compression of steam, 13.
of cut-off of steam, 11, 15, 25.

Polishing metais, 239.
Poncelet's water-wheel, 107.
Port, exhaust, 29, 40.

steam, 28, 29, 40.

Portable-engines, hire of, 143.

Portable engine boilers, proportions and
weight of, 172.

engine boilers, rule for weight of, 174.
Position of feed in boilers, 166.
Pot-metal, 232.

Power absorbed by friction, 138.

and weight of men and animals, 4.

of belts, 154, 155.

of boilers, 167.

of crane gearing, 123.

of crank shafts, 141, 143.

of engines, 5.

of factory chimneys, 187.

of frictional gearing, 125.
of fuels, 161, 360.

of gas, 361.

on necks of shafts, 143.

Prevention of scale in steam boilers, 189.

of the corrosion of metals, 340.

Price of drilled work, 218.

of fitter's work, 218.

cf hired steam-power, 143.

of lathe work, 218.

of machined work, 218.

of planing work, 218.

- of turning work, 218.

selling, of goods, 411.

Production and conversion of steel, 338.

Profit and discount table, 411.

Properties of air, 412.

of saturated steam, 16, 17.

Pulleys, cementing leather on, 353.
for belts, 150-154.

for rope gearing, 126.

for rope gearing, weight of, 126.
weight of, 153.

with curved arms, 161.

with straight arms, 151, 152.
wood, friction on, 156.

wood, to harden, 347.

Pulling force of animals, 4.

Pump suction and delivery pipes, 94.
--barrels, load to be overcome in, 98.
well-frames, 94.

Pumping engines, speed of, 97.

Pumps, 90-100, 332, 333.

air, 55-58.

air vessel for, 91, 95.

capacity of, 90, 95.
centrifugal, 96.

diameter of, 96.

discharge of, 95, 99, 100, 333,

effective work of, 96.

feed, 45- force-, 94.

for hot water, 94.

for hand-power, 93.

to collapsing, 179, 181.

to compression, 226, 259, 257, 279,

324, 325, 370-372.

to friction, 138.

to tearing, 177.

to tension, 101, 102, 111, 155, 156,
176, 226, 229, 230, 259, 260, 262, 253,
264, 267, 284, 293, 324, 325, 370.
to traction, 4, 66.

Return tube boilers, 173.
Rhymers, proportion of, 253.

to harden, 249.
Richards' indicator, 9.

Riggers, proportions of, 152.

rules for, 150.

weight of, 153.

Rim of pulley, to strengthen, 154.
of wheels, 116.

Rings, strengthening, for boilers, 164.
Rivers, flow of, 108.
Riveted girders, 269.

joints, 176, 177, 178, 280, 281.
joints in soft steel-plates, 281
seams, 176, 177, 178, 280, 281.
steel pipes or tubes, 322, 323.
Rivets, brass, alloy for, 232.
copper, alloy for, 232.
copper, weight of, 303.
iron, weight of, 303.
proportions of, 280.
pitch of, for boilers, 280.

pitch of, for girders, 269.

tests for, 261.

Scale in boilers, 189.
millimetre, 394.

Screws and bolts, 255, 283.
for wood, 295

Screw change wheels for, 219-225.
cutting, millimetre pitches, 218, 225.
rules for, 215-218.

-keys or spanners, 284.

Screwing bolts, 211.

tackle, 251, 252.

Sea water, composition of, 194.
weight of, 86.

Selling price of goods, to find the, 411.

Setting boilers, 165.

Sewage, flow of, III.

pipes, discharge of, 111, 334.
weight of, 85, 328, 334.

Sewers, egg-shaped, area of, 407.
inclination of, 109.

Shafts crank, 43, 141, 144.

crank, horse-power of, 141, 143-
bearing metal for, 229–235.
for cranes, 141.
friction of, 138.

hollow, strength of, 140.

horse power of cast iron-wrought

iron and steel, 142.

lifting heavy weights, 141.
strain on, 139, 141.

Whitworth's compressed steel, 140,

339.

Shafting, collars for, 144.

couplings for, 143, 145, 146, 147.
distance of bearings of, 142, 144.
hangers for, 145, 147, 148.

speed of, 143.

torsional strength of, 139.
weight of, 144.

Shaping machines, 211: power for, 330.

Shearing, iron, 358, 359.

Sheet-brass, 290, 292, 305.

copper, 290, 292, 305.
gauge, B. G., 289.
glass, 303.

iron, 282, 286, 289, 305.

iron, galvanized, 303.
lead, 291, 303, 305.

steel, 282, 291, 305, 339.

tin, 292, 3O2.

zinc, 291, 292, 302.
Shell of boilers, 161, 175.
Ship plates, strength of, 259.

- plates, test for, 260.
Shortness of water in boilers, 191.
Siemens-steel, 338.
Silicon-bronze, 3c8.
Silver, alloy for, 335.

· German, 235.
imitation, 235.
solders, 238.

Silvering metals, 243.

Size of bore of guns, 302.

Sizes and weights of tin plates, 302.