WINDMILLS 



497 



Loading and speed of 14-foot power windmill when developing its maximum 



power (Fuller) 



Sizes of circular reservoirs and estimated cost for various areas of land to be 

 irrigated from windmills (Fuller) 



The following table gives the dimensions of circular reservoirs of 

 different capacities ; the quantities of earth in the embankments, if 

 these have inside slopes of three to one and outside slopes of one to 

 one ; the areas which can be irrigated, provided the reservoir full of 

 water is used once in ten days throughout five months and the land 

 receives water to a depth of one foot ; the sizes of mills recommended, 

 and the costs of reservoirs and mills. The lift assumed in choosing the 

 mills is 14 feet : — 



1 Not including well. 



2k 



