Newton, method of, for determining the thickness of transparent substances, 10. Laws of motion of, 46. O. Oscillation, 129. Of the pendulum, 145. Centre of, 152. P. Parallelogram, 51. Particle, 6. Pendulum, oscillation or vibration of, 145. Isochronism of, 147. Centre of oscillation of, 152. Of Troughton, 284. Compensation, 307. Of Harrison, 313. Tubular, of Troughton, 314. Of Benzenberg, 316. Ward’s compensation, 318. Captain Kater’s compensation, 320. Reid’s; Ellicott’s compensation, 322. Steel and brass compensation, 324. Mercurial, 326. Graham’s mercurial, 329. Wood and lead, 334. Smeaton’s, 335. Percussion, 130. Centre of, 144. Planes of cleavage, 15. Porosity, 17. Power, 161. Properties, 2. Projectiles, curvilinear path of, 82. Pulley, 164. Tackle; fixed, 198. Single moveable, 200. Called a runner; Spanish bartons, 205. R. Rail-roads, 213. Regulating damper, 233. Regulators, 227. Repulsion, 8. Molecular, 74. Resultant, 51. Rose-engine, 250. S. Salters, spring balance of, 305. Screw, 209. Concave, 217. Micrometer, 223. Shape, 5. Siphon, capillary, 73. Spring, 304. Statics, 160. Steelyard, 294. C. Paul’s, 296. Chinese, 299. T. Table, whirling, 99. Tachometer, 234. Tread-mill, 179. V. Velocity, angular, 99. Vibration, 129. Of the pendulum, 145. Centre of, 152. Volume, 5–17. W. Watch, mainspring of; balance wheel of, 195. Water regulator, 229. Wedge, 209. Use of, 215. Weight, 161–291. Weighing machines, 278. For turnpike roads, 302. By means of a spring, 303. Wheels, spur, crown, bevelled, 189. Escapement, 194. Wheel and axle, 177. Wheel-work, 176. Winch, 179. Windlass, 178. Wollaston’s wire, 10. Z. Zureda, apparatus of; Leupold’s application of, 251. END OF MECHANICS. LONDON: SPOTTISWOODES and SHAW New-street-Square.