658.
Beams, 133.

-Allowance for Weight of, 346.
-Cast-iron, 318.

deflection under any Load, 328.
-Direct Vertical Stress in, 342.
-Expansion and Contraction of,
348.

fixed at both Ends, 332.
-Limiting Length of, 347.
-Lines of Principal Stress in, 341.
of Uniform Strength, 320.
originally Curved, 348.
-Partially Loaded, 344.
-Proot Deflection of, 322.

-Proportion of Depth to Span of,
327

-Resilience of, 330.

-Shearing Stress in, 338, 342.
-Sloping, 348.

-Strength of, 307, 315, 318, 631.

Bearings, 422.

Belts, 288, 454.

Bending-Moment of, 308.

Blocks-Stability of a series of, 230.

Resistance to, 307.

Bevel-wheels, 428, 448.

and Tackle, 462.

Bodies, 13.

Boiler Stays, 296.

640, 650.

-Strength of, 362, 651.
Catenary, 177.

Cells-Strength of, 364.

Centre of Buoyancy, 121, 601.
of Gravity, 49, 180, 505.
of Mass, 482.

of Oscillation, 516.

of Parallel Forces, 31.

of Percussion, 520, 514

of Pressure, 71. 76, 125, 227.
of Resistance, 131.

Centrifugal Couple, 537, 621.

Force, 387, 491, 546.
Pump, 597, 650,

Chains-Equilibrium of, 162.

for Pulleys, 454.
Channel-Flow in, 411.

Chimneys-Stability of, 228, 235, 210,

Bond in Brickwork, 222.

Bracing of Frames, 142.

Brakes, 624, 639, 640, 643.

Breaking across-Resistance to, 307.

Breast-wheel, 628.

Brickwork. 222, 226, 242.

Bridge-Britannia, 367.

-Conway, 367.

"" -Forth 656.

-Niagara, 656.

-Victoria, 367.

Bridges, 149, 153, 263, 344, 367, 652, 655.
-Suspension, 149, 171, 286, 370.

Britannia Bridge, 367.

Bronze, 647, 651.

Buckling, 02.

Bulging, 302

Buoyancy, 120, 645.

-Centre of, 121, 601, 645.

Buttresses, 228, 235.

CABLES-Strength of, 288.
Caissons, 656.

Cain, 449.

Cantilever Bridge, 656.

-Cantilever, 656.

-Bowstring, 369.

-Cellular, 367.

-Compound, 366.

-Half-lattice, 153, 369.

-Lattice, 160, 369.

-Plate, 366.

-Stiffening-for Suspension Bridges,

370.

-Tubular, 366, 367.

-Warren, 153.

Governor, 548, 627.

Gravity-Accelerating Effect of, 485.

-Centre of, 15, 49, 61, 180.
-Motion under, 485, 486.
-Specific, 49, 124.

-Specific-Table of, 664.

Grease, 613.

Groined Vaults, 262.

Gyration, 515, 542.

-Radius of, 515

-Table of Radii of, 518.

-of Liquid, 568, 627.

HEAD-Dynamic-of Gas, 573.

-Equal-Surfaces of, 5:3.

-Polygonal, 139.

of two Bars, 136.