TANKS AND CISTERNS. 



37 



earth sodded in part and in part planted, and surmounted 

 by a rustic stage and summer-house built of cedar boughs 

 and roots. Above the whole, towers a powerful windmill 

 which serves to pump the water from a well near by into 

 the tank and force it from thence into the extensive 

 greenhouses and other buildings upon the farm. Although 

 the cost of such a structure is large, yet it is in such a 

 case as this no more than a necessary outlay of capital, 

 without which the business could not be carried on^ and 

 is simply an expenditure made in a true spirit of economy. 

 Such a tank of considerable size and great utility (see 

 fig. 3), may be dug in the ground at the highest part of 



Fig. 3. BRICK CISTERN. 



the garden, to such a depth that the soil excavated will 

 make a retaining bank to support the portion of the wall 

 that is above the surface of the ground. This tank, 

 which is circular, may be covered with an arch of brick 

 work, and may be surmounted by a tool^liouse or other 

 useful building. In this case a brick shaft 2 1 1 2 feet thick 

 each way should be build in the center from which the 

 arch would spring to the circular wall of the cistern ; the 

 wall should be 9 inches thick and the bottom may be 

 either of bricks laid flat or of cement laid upon the earth. 



