312 MANUAL OF VEGETABLE-GARDEN INSECTS 



other crops on which paris green and arsenate of lead can be 

 safely used, spraying is the most practical measure to be em- 

 ployed. The poison should be applied at the first appearance 

 of the beetles, using 1 pound of paris green or 3 or 4 pounds of 

 arsenate of lead (paste) to 50 gallons of water. One pound 

 of lime should be added to each pound of paris green to lessen 

 the danger of burning the leaves. The arsenicals may be 

 used to advantage somewhat stronger^ provided the plants 

 are not injured. In some cases in which it is not possible to 

 use an arsenical poison, the beetles may be driven before the 

 wind into windrows of hay or straw along the edge of the field 

 and then burned. 



