398 



VEGETABLE GARDENING 



tials for the successful storage of onions are plenty of 

 ventilation, storing in small quantities, a comparatively 

 low temperature, dryness, and safety from actual freez- 

 ing. Any building wherein the above conditions may be 

 secured will answer, but houses of the type shown in 

 Figure 94, which are built especially for the purpose, are 

 most satisfactory. 



"The construction of the storage house should be 

 double throughout, with plenty of felt or paper lining. 

 Both top and bottom ventilation should be provided, 



FIG. 94. ONION STORAGE HOUSE 



and the ventilator openings should have windows that 

 may be closed to control the temperature. The floors are 

 constructed of narrow planks with ^-inch spaces be- 

 tween the planks for the passage of air. Bottom ventila- 

 tion is frequently secured by means of drain pipes built 

 into the foundation at the surface of the ground. These 

 pipes are carried some distance toward the center of the 

 house. They discharge the cool air at a point where it 

 is most needed. 



"The temperature of the storage house should be car- 

 ried as low as possible without actual freezing. During 



