390 



Rural Architecture. 



cement lined cistern beneath the surface in the hill above 

 tho barn. Such a cistern is less expensive, is a permanent 

 improvement and will keep the water warm and clean. 



We have seen cases where a satisfactory cement lined 

 cistern is built entirely above ground and then covered in 

 by grading a mound of earth about and over it sufficient to 

 make it frost proof. Such a cistern should be provided 

 with a man-hole so that it may be entered if necessary. 



485. Watering Trough. Where stock is watered in tho 

 yard a -good arrangement for winter, where the ground is 

 porous, is represented in Fig. 191. The tank is a galvan- 

 ized cylinder 8 or more feet in diameter and 5 feet deep 

 which stands in a dry well 15 or more feet deep and so ar- 

 ranged that the warm air from the bottom of the well all 

 the time surrounds the tank and keeps it from freezing. 

 Water may be pumped into this direct or it may be sup- 

 plied from the bank cistern. When it is necessary to 

 empty the tank the plug can be removed and the water al- 

 lowed to drain into the dry well. 



FIG. 191. Representing a storage reservoir and drinking tank arranged to 

 avoid freezing. 



It is of course important to provide a warm jacket about 

 the tank and cover, as represented, so as to assist in keeping 

 the water warm. 



