vi Contents. 



Friction . . . . . . .136 



Stiffness of Cords . . . . . . 156 



Balance, Steelyard, 8fc. . . . . . 161 



DYNAMICS. 



Motion uniformly accelerated . . . .165 



Free Motion in heavy Bodies . . . . .168 



Direct Collision of Bodies . . .175 



Direct Collision of unelastic Bodies . . . .176 



Force of Inertia . . . . . . 178 



Application of the Principles of Collision of unelastic Bodies 181 



Collision of elastic Bodies . . . . 185 



Motion of Projectiles . . . . .190 



Motion of heavy Bodies down inclined Planes . . 205 



Motion along curved Sarfaces . . . .410 



Motion of Oscillation . . . . .215 



Pendulums . . . . . .221 



Line of swiftest Descent .' . . . . 225 



Moment of Inertia . . . . . 230 



Centre of Percussion and Centre of Oscillation . .236 



Actual Length of the Seconds Pendulum . . . 246 



Measure of the Force of Gravity . . . .249 



Application of the Pendulum to Time-Keepers . . 250 



Rotation of Bodies unconfined . . * .257 



Method of estimating the Forces applied to Machines . 265 



Maximum Effect of Agents and Machines . . . 273 



HYDROSTATICS. 



INTRODUCTORY REMARKS . . . . .289 



Pressure of Fluids ...... 290 



Solids immersed in Fluids .... 306 



Specific Gravities . . . . . .308 



Spirit Level . . . . . .321 



Equilibrium of Floating Bodies . , . .322 



Capillary Attraction . . . . . 336 



Apparent Attraction and Repulsion observed in Bodies floating 



near each other on the Surface of Fluids . .349 



Barometer . . . . . .351 



