224 



The Potato Crops 



over this a layer of soil. The covering of soil should 

 be only a few inches thick at first but increased as the 

 weather gets cold. Keep the ends of the trenches and 

 flue open until it is necessary to close them to keep out 

 the frost. It is better to make several small pits rather 



122. Section of a large sweet-potato house. 



than one large one, because it is best to remove the entire 

 contents when the pit is opened." 



The illustration (Fig. 121) shows a crude but service- 

 able type of outdoor cellar sometimes used in the South for 

 sweet potatoes. It should have openings near the top and 



