IRRIGATION 



227 



supply of water may be had at small expense 

 from springs, ponds or streams. In larger 

 establishments it may be cheaper to install a 

 private system than to depend on city water. 

 Often, also, the ranges are located out- 

 side the city limits where city water can- 

 not be had. Data based on the reports of 



nearly 100 florists and 

 vegetable growers 

 show that the average 

 cost per 1,000 gallons 

 of city water is 18 

 cents, and that the 

 average cost of the 

 home supply, includ- 

 ing cost of equipment, 

 depreciation and main- 

 tenance, is 21 cents 

 per 1,000 gallons. 



Pumps. For gen- 

 eral purposes some of 

 the many types of 

 combination lift and 

 force pumps now on 

 the market are com- 

 monly used. Pumps 



Fig. 120. Pumping jack 



for applying power to a 



hand pump 



of this type may be had which are directly 

 geared to a gas or steam engine, or to an 



