370 



IRRIGATION FARMING. 



ders working alternately as the atmospheric pressure is 

 removed from them, thus allowing the water to rush in 

 and discharge itself. They are useful only for small 

 lifts, and theoretically are not calculated to raise water 

 more than twenty feet. Some are 

 suomerged, while others are placed on 

 the Surface over the well. 



Various Pumps. — One of the 

 best piston pumps for windmills is the 

 Gause, which is very effedlive when 



FIG. 80 — GAUSE PUMP 

 AND POINTS. 



FIG. 81 — IRRIGATION PUMP 

 CYLINDER. 



Operated in connedlion with the point system, as snown 

 in Fig. 80. This pump is largely used in Western Kan- 

 sas. In many of the piston pumps for wind power 

 it is advisable to use an irrigation cylinder in the well. 



