Sweet Potato 



225 



''el'VENT 



bottom and through the top for ventilation. Eegular 

 " sweet-potato storage houses may be built of wood, brick, 

 hollow tile, cement, or stone. Wooden houses are preferable, 

 because they 

 are cheaper and drn M/try 

 easier to keep dry 

 than the other 

 types. It is dif- 

 ficult to keep 

 moisture from 

 collecting on the 

 walls of a ce- 

 ment, stone, or 

 brick house. 

 Where such 

 houses are built 

 for sweet-potato 

 storage they 

 should be lined with lumber, so as to keep the air in the 

 house from coming in contact with the masonry walls. It 

 is best to build sweet-potato storage houses on foundations 

 that allow a circulation of air under them." Fig. 122 is a 

 cross-section of a 24 x 60-foot sweet-potato house, and Fig. 

 123 of a 12 X 16 house. " To keep sweet potatoes in good 

 condition they must be (1) well matured before digging, 

 (2) carefully handled, (3) well dried or cured after being 

 put in the house, and (4) kept at a uniform temperature 

 after they are cured." The Figs. 122 and 123 illustrate 

 cross-sections of the structures. The horizontal lines indi- 

 cate the construction of bins, which are slated on both 



123. Section of a small sweet-potato house. 



