276 SCHOOL AND HOME GARDENS 
with the seeds a mixture of sulfur and air-slaked lime, two 
parts of sulfur to one of lime. One ounce of the mixture 
is sufficient for fifty feet of drill. For rust, rotate crops 
and spray with copper sulfate, one pound to fifteen gallons 
of water. Spray with Bordeaux mixture for black mold. 
Fic. 149, Drying Onions in a Garden in Arlington, Massachusetts 
Pests. While young the bulbs are sometimes injured 
by the onion maggot. As soon as the plants are up, 
sprinkle the soil around them with carbolie acid emul- 
sion, and at weekly intervals, while there is danger, 
apply tobacco dust along the row. Bum all injured 
plants. Spray with kerosene emulsion for thrips. Destroy 
cutworms with poisoned bait. 
