CULTURAL DIRECTIONS 
399 
extremely cold weather the ventilator openings and 
doors should be kept closed, to keep out cold, and after 
the onions have become thoroughly chilled the house 
should be kept closed in order to hold the temperature 
down and prevent the entrance of moisture during warm 
or rainy periods. Damp, foggy weather is injurious to 
onions, especially if it follows a period of cold, and will 
cause the bulbs to become covered with moisture if the 
outside air is admitted. A little artificial heat from a 
FIG. 95- ONIONS STORED IN CRATES 
stove or a radiator may be required during excessively 
cold weather, but so long as the temperature in the 
house does not fall below 33 degrees there will be no 
danger of injury. A temperature of 34 to 36 degrees will 
give best results.” 
The crates previously referred to are 20 inches long, 
16 inches wide and 14 inches deep, outside measure- 
ments. They are made of slats ^-inch thick and 2 j/? 
inches wide, four pieces forming the side. The slats are 
