ADORNING THE FARMSTEAD AND SCHOOL GROUNDS. 445 



With the gardener it is an important matter of business and 

 for that reason it is practical instruction that ought to be within 

 the reach of all. 



A permanent hotbed may be made so that it may be heated 

 either by radiating pipes from the heating plant or by fermenting 

 manure. A hotbed may be made as shown in the following figure. 



.^Sdfr^^^ .MA N U R E. ^- V^2"A^,- ^ 



*&^^'->;/&&', 



FIG. 15 Cross section of a permanent hotbed or pit. 



A pit should be dug from 2 to 2^ feet in depth, according 

 to the climate. The pit should have plank, brick or cement walls 

 on all sides. Standard hotbed sash are 3 by 6 feet. The pit 

 should therefore be built in the proper proportion so that the 

 frames may be used. 



The pit should be filled with manure to within 4/5 of the 

 depth and then covered with about 6 inches of soil. 



The following table is given by the U. S. Department of 

 Agriculture : 



