AGRICULTURAL EXGIXEER1N"G. 



153 



CAPACITIES OF AVINDMILLS AND PUMPS. 



(Irrigation Age.) 



Sizes of Irrigation Mills and Pumps best Adapted for 

 each other to Work Successfully under Ordinary 

 Conditions. 



io-/oot Mills. 



3,66o I 87,840 

 2,580 61,920 

 1,320 I 31,680 



12-foot Mills. 



90X75 

 90X60 



60X40 

 50X30 



14-foot Mills. 



* Amount of land that can be covered i ft. deep with windmills work- 

 ing at the rate of 15 hours per day for 300 days in the year. Acres cov- 

 ered 1 ft. deep. 



t Capable of holding water for 24 liours" continuous pumping. These 

 sizes should have 4 ft. depth of water, height of bank 5 ft,, width of base 

 16 ft., 2 ft. of w.-itcr below discharge-pipe not included. These reservoirs 

 to connect with additional reservoir by overflow-pipe in order to utilize 

 full capacity of mills and pumps. Overflow-reservoir should be of i- and 2- 

 acre capacity, 8 ft. deep, banks 9 ft. high, base of bank 45 ft,, acre size 

 209 ft. on each side, corners rounded; 2-acre size 209 X 418 ft. 



