TANKS. 91 



In piping houses there should be one pipe 

 along each path, with hose connections fifty feet 

 apart. For five houses, each one hundred feet by 

 twelve feet, the main water pipe should be one 

 and one-half inches in diameter, with an inch 

 lateral in each house. The hose connections 

 should be three-quarters of an inch, as it does 

 not pay to use one inch hose. It rarely happens 

 that watering goes on in more than one house 

 at a time, so that the one and one-half inch main 

 will be found large enough. 



We do not believe there is any special advan- 

 tage in heating the water in winter. In fact so 

 far as our experience goes cold water is just as 

 good as warm water. This is the general con- 

 clusion where careful comparative experiments 

 have been made. It is sometimes an advantage 

 to be able to use liquid fertilizers, and for this 

 purpose a small tank of five hundred to eight 

 hundred gallons should be provided. It should 

 have a separate pipe system, one-inch pipe being 

 large enough all round. If this tank can be set 

 in a barn loft or some slightly elevated place 

 where its contents will not freeze it will be an 

 advantage. The additional cost of a tank of this 

 kind, with pipes and fittings, will be about seventy- 

 five dollars. Such a tank would have sufficient 

 capacity for furnishing liquid food for eight to 

 ten thousand plants. 



