WATER SUPPLY AND PUMPS 



hot-air engine. The principle is that the com- 

 pressed air entering the well casing through a 

 small pipe, forces water up through the water 

 pipe, which is in the same casing. The water 

 is discharged into a small tank, built in the 

 pump house, from whence it is pumped into a 

 storage tank, for distribution. The cost of such 

 a system should be between three hundred and 

 seventy-five dollars and four hundred dollars, 

 exclusive of building the pump house, piping, 

 etc. 



It should not be forgotten that each place of- 

 fers a different problem. However, where av- 

 erage conditions prevail, a driven well, operated 

 by either a well pump or the air-lift system, 

 including a hot-air or gasolene engine with an 

 air-pressure storage tank, will usually be found 

 the most satisfactory. On the other hand, if a 

 spring supplies the farm, and a sufficient fall of 

 water can be obtained for operating a hydraulic 

 ram, it will give good service provided it is well 

 covered during the winter months. Again, if 

 the spring Is only large enough to supply drink- 

 ing water, and a creek or stream passes through 



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