WATER SUPPLY 



367 



or a windmill will work in any storage system, pumping air 

 or water or both. 



Daily consumption. The quantity of water which must 

 be provided for different animals per day and for house 

 consumption is shown, approximately, in the following table: 



Horse 2> l A~7 gallons per day- 

 Cow Sy 2 -\2 " " " 



Hog . 1-3 " " " 



Sheep 1-3 " " " 



House with water and sink, per 



person 12 " " 



House with sink, bath, and laun- 

 dry, per person 30 



The large variation in the quantity of water required by 

 animals is occasioned by the weather, the nature of the feed, 

 and — in the case of the horse — the work being done. 



The gravity tank. A tank, or several barrels, located at 

 any convenient place about as high as the attic floor, will 

 force water as high as it 

 needs to go for all house fix- 

 tures. It will be of little 

 value for protection against 

 fire. Sufficient pressure is 

 provided by an elevated 

 tank outside, but this is 

 much exposed to frost and 

 is not popular in the North 

 where the winters are as in 

 Minnesota severe. Figure 

 286 shows a very simple 

 and inexpensive water pro- 

 vision. This will supply the 

 kitchen and laundry, or, by use of 14-foot posts, it is ade- 

 quate for the upper floor. A tank in the attic is not likely 

 to freeze, but it will sweat and may run over, may leak, and 

 is very heavy if large enough to supply all needs. A tank 



/^fi/j/11? 



or /fyc/rats//c fom 



To S^^s 



Fig. 286. 



7b Mouse 

 After University of Minnesota 



A six-dollar water supply 



