74 FARM CROPS 



the first section ; leave a space of about 6 inches 

 then put in another section, and so on. Round up 

 the top, fill the 6 inches of space between the heaps 

 with straw and cover the whole with straw and 18 

 or more inches of soil. 



This plan requires much less work in covering 

 and is in reality a series of small pits, each distinct. 

 The tubers keep better in this way, and as only one 

 section at a time need be opened there is less lia- 

 bility to waste than if the pit were a large one con- 

 taining the entire crop. In some sections of the 

 country the covering or soil must be 2 or 3 feet 

 deep to prevent freezing. 



