53G 



Farm Mechanics. 



Table showing computed amount of water lifted 10 feet high 

 during consecutive 10-day periods for one full year, ex- 

 pressed in acre-inches. 



It will be seen from this table that the smallest amount 

 of water lifted ten feet high, in 10 days, was enough to 

 cover 9.87 acres one inch deep and this occurred from July 

 28 to August 7, at the time w r hen water for irrigation is 

 most needed. The largest amount pumped occurred dur- 

 ing the 10 days, from Feb 13 to 23, and was enough to 

 cover 75.73 acres one inch deep. 



675. Observed Amount of Work Done by a Windmill in 

 Grinding Feed. Another set of trials, aiming to measure 

 the amount of feed which may be ground with a 12-foot 

 geared windmill, was made at the Wisconsin Experiment 

 Station,* and using the observed amounts of corn ground 

 under a wide range of wind velocities and the observed 

 hourly wind velocities, as recorded for the pumping exper- 

 iment, the amount of feed which could have been ground, 

 had it been fed automatically and kept running continu- 

 ously, has been computed and given in the table which fol- 

 lows : 



* Bulletin 82, Wisconsin Agricultural Experiment Station. 



