x CONTENTS, 



The Wedge, *.... Page 86 



The Screw, - 89 



The Funicular Machine, 92 



SECT. 2. Friction, . 93 



...... 4. Mechanical Agents, 107 



5. Motion of Machines, 116 



6. Descent of heavy Bodies on plain and 



curved Surfaces, - 126 



Centre of Oscillation, , 130 

 Heavy Bodies descending on a 



Cycloidal Surface, 134 

 7. Rotation of Bodies. 



Rotation about a Fixed Axis, - 136 



Rotation on a Moveable Axis, - 143 



APPENDIX (to MECHANICS). 



Construction of Arches. 147 



Strength of Timber, - W > 157 



HYDROSTATICS. 



SECT. 1. Pressure of Fluids, >5teM 168 



2. Solid Bodies floating on Fluids, 176 



- 3. Phenomena of Capillary Tubes, 184 



HYDRAULICS. 



SECT. 1. Fluids, issuing through Apertures in 



the Bottom or Sides of Vessels, 194 



- 2. Conduit Pipes, and open Canals, 199 

 " 3. Percussion and Resistance of Fluids, 206 



4. Undulation of Fluids, or the Formation 



of Waves, 211 



5. Hydraulic 



