x CONTENTS. 



A*T. PAOE 



141. The Siphon 264 



142. The Diving Bell 266 



143. The Common Pump (Suction Pump) 268 



144. Tension of the Piston-Rod 270 



145. Height through which Water Rises in One Stroke 271 



146. The Lifting Pump '. 273 



I 7 The Forcing Pump 274 



148. The Fire Engine . 276 



149. Bramah's Press 276 



150. Hawksbee's Air Pump 277 



151. Smeaton's Air-Pump 279 



152. The Hydraulic Ram 280 



153. Work of Water Wheels 282 



154. Work of Overshot Wheels 283 



155. Work of Breaet Wheels 284 



156. Work of Undershot Wheels 285 



157. Work of the Poncelet Water Wheel 286 



158. The Reaction Wheel ; Barker's Mill 288 



159. The Centrifugal Pump 290 



160. Turbines 292 



Examples 294 



