PUMPS. 225 



minute. This would supply about 7,000 acres of land 

 with water for continuous irrigation. The principal upon 

 which this powerful pump works is that of the common 

 propeller of the steam ship. An ordinary propeller shaft 

 is enclosed in an iron pipe, and is rotated by means of a 

 pulley and a belt from an engine. A section of this pump 

 is shown at lig. 105. It is known as Shaw s Compound 

 Propeller Pump, and is manufactured in Philadelphia. 

 The method of its operation is shown at fig. 106. It has 

 the advantage that it can lift water any desired hight by 

 proper adjustment. Perhaps no pump is better adapted 

 to extensive irrigation than this. 



It is, however, at the present time, the smaller pumps 

 that will be most available for watering crops at intervals 

 when rain is inadequately supplied. To have then a re- 



Fig. 107. WHITMAN & BURRELL S STEAM ENGINE AND PUMP. 



source that can be drawn upon will be invaluable. For 

 such purposes smaller pumps are made, the cost of which 

 is comparatively trifling. One of these, intended to be 

 operated by steam, and known as the Fairchild Steam 

 Engine and Pump combined, is manufactured by Messrs. 

 Whitman and Burrell, of Little Falls, N. Y., for the very 

 moderate cost of $75. This pump will raise 30 gallons 

 a minute, which will be sufficient to cover 2 acres of land 



