-Flow of, 365.

for Furnaces-Supply of, 295.

Air-pump of Steam Engine, 297, 365.
Aluminium Bronze-Strength of, 205.

Ampere Meter, Sir Wm. Thomson's, 362.
Unit of Current, 303.

Angle of Repose, 180, 182, 240.

of Rupture, 179.

-To set out a right, 127.

Angles-Measures of, 90.

دو

-Reduction of-to the Centre, 130.
taken by Sextant-Reduction of-to
the Level, 130.

Angular Momentum, 247.

Velocity Measures of, 102.

Aqueducts, 264, 268.
Arc Lamps, 360.

Arch-Linear, or Equilibrated rib, 174, 176,
225.

of Masonry or Brickwork-Stability
of, 188.

-Strength of, 224.

Area-Measures of, 95.

Areas-Mensuration of, 63, 129, 143.
Asses-Work of, 251.

Atmospheric Pressure, 115, 132.
Axis of Rotation, 229.
Axle-Strength of, 226, 249.
Azimuth, 119.

BACK Pressure, 291.

Backwater from a Weir, 265.
Bands-Friction of, 241.

in Mechanism, 235.

Barometer-Levelling by, 132, 366.
Bars-Weight of, 153.

Base of Survey-To measure, 123.

Battery-Chloride of Silver, De la Rue, 334.

--E. M. F. Tables, 335.

Battery-Faure's Secondary, 334.
-Resistance Test, 319.

Beams-Action of Load on, 212.

-Allowance for Weight of, 220.
-Continuous-over Piers, 224.
-Cross-sections of equal Strength
for, 219.

-Deflection of, 221.

-Effect of Twisting on, 226.
-Limiting Length of, 221.
of Uniform Strength, 219, 229.
-Proportion of Depth to Span of,

224.

-Resilience of, 224

-Shearing Action on, 216.

-Stiffness of, 221.

-Strength of, 212.

-Sudden Load on, 216.

-To Deduce Stress from Deflection
of, 224.

-Travelling Load on, 216.
Bed of Stream-Stability of, 268.
Belts, 235.

Bending-Resistance to, 212.
Bevel-wheels, 231.

Birmingham Wire Gauge, 358.
Blasting-Labour of, 253, 374.
Blocks and Tackle, 238.
Blowing off, 297.

Boiler-Dimensions and Fittings of, 297.
-Efficiency of, 296.

Dip of Horizon, 122.

Capacity Tests, 315, 316.

Electrolysis-Laws, &c. 305, 306.
Elliptic Arcs-To measure, 78.
Areas, 69.

Embankments, 142, 180.

Energy, 239, 304.

-Actual, 246.

-Actual-of a Rotating Body,247.
of Heat, 277.

-Potential, 239.

Engines-Steam, 277, 371.
English Unit of Light, 305.
Epicycloidal Teeth, 234.
Equilibrated Arch, 174, 225.
Equivalent-Dynamical-of Heat, 277.
Erg Unit of Work or Energy, 304.
Evaporation-Factors of, 284.

-Latent Heat of, 283.
-Total Heat of, 283.
-Unit of, 105, 277.

Excavation, 143.

Lines, 356, 357.

Discharge-Co-efficients of, 259.
Drainage Area, 267.

Dynamo-machines, Tests of, 360, 364.
Dynamometer for Cables, 353.

for Dynamos, 361.
Dyne Unit of Force, 304.

EARTH-Curvature of the, 117, 131.
-Dimensions of the, 117.
-Heaviness of, 152.
-Natural Slope of, 180.
-Pressure of, 179, 180, 183.

Earthwork-Breadths of, 142.
-Labour of, 253.
-Mensuration of, 143.
-Setting-out, 142.

Ebonite, 333.

Eccentric, 298.

Efficiency-Conditions of Greatest-in

Heat Engines, 277.

Force-Absolute Unit of, 104, 302, 304,

-Centrifugal, 246.

of a Fall of Water, 269.

of Machines, 239.

of Propellers, 275, 372.

of Turbines, 269.

of Vertical Water-wheels, 269.

-Driving, 240.

Effort, 240.

-French Unit of, 304.

-Component, 159.

-Distributed, 146, 158.

Elasticity of Gases, 278, 280.

of Solids, 195.

Electric Lamps-How to Test, 361.
Light-Conductors for, 359.

"

Electrical Data of Cables, 350, 352.

-Resultant, 158, 159.

-Work of Varying, 242.

Forces-Composition and Resolution of,

296.

-Expenditure of, 296.

-Supply of Air to, 295.

&c., 329.

-Willoughby Smith's Electro-
static Capacity, 331.
-Willoughby Smith's Insu-
lation Resistance, 333.
-Willoughby Smith's Resist-
ance Tables, 332.
-Willoughby Smith's Specific
Gravity Strength, 331.

Gyration-Radius of, 154.

HARMONIC Curve, 70.
Head due to Velocity, 249.
of water, 256.

Heat-Dynamical Equivalent of, 277.
Electrical Unit of (see Joule), 303.
"-Energy of Combustion with Oxygen,
307.

Fusion, 365.

Girder, 169, 212.

-Continuous, 224.

-Energy of Combustion with Chlor-
ine, 308.

Engines-Efficiency of, 277.
-Expansion by, 147, 148, 278, 280.
,, -Expenditure of-in an Engine, 283,

-Specific, 277, 278, 279.
-Unit of, 105, 304, 305.
Heating Surface, 296, 371.
Heaviness, 102, 147.

-

-Tables of, 149.
Height due to Velocity, 248.

-Table of, 249.

-Indicated-of Steam
Engine, 289.
-Nominal, 301.

Horses Work of, 251.

Hydraulic Mean Depth, 258.

Press-Strength of, 208.

Ram, 273.

245,

Hydraulics, 256.

-Electro-static Capacity, 328,

331.

-Resistance and Tables, 329,
330, 331.

-Specific Gravity, 328, 331.

-Strength, 331.

-Stretched, 328.

Hydrocarbons, 296.

Hydrostatic Arch, 176.

Hydrogen, 296.

Hyperbolic Areas, 70.

Logarithms, 35, 38.

ICE-Melting of, 365.
Impulse, 245.

Incandescent Lamps, 361.
Indicated Power, 289.
Indicator-Steam engine, 242.
Inertia-Moment of, 154.

-Reduced, 249.

Latent Heat of Evaporation, 283.

Fusion, 365.

-Solid, 96.
-Superficial, 95.

of a place-To find, 122.

Laws's Test for E.M.F., 318.

Length-Measures of, 92, 302.
Level-for angles, 130.

-Reduction to the-for distances, 127.

Units, 302.

Mechanism, 231.

Megohm-Resistance Unit, 303.
Melting Points, 365.

Men-Work of, 252.

Meridian-Length of Arcs of, 117, 118.
-To find the, 119.

Metacentre, 275.
Metacentric Height, 275.