Poisoning Insects 



best spray is lead arsenate (1 lb. to 20 gallons of water). 

 This may be used for all biting insects, includiag 

 caterpillars, larvae of sawflies, and beetles, so long 

 as the parts to be sprayed are not to be eaten. 

 It is safe to use on trees bearing young fruit, and on 

 young cabbages and turnips that have not developed 

 the edible parts, but not on old ones, or on fruits 

 that are well developed. It is of course useless to 

 spray against insects that feed upon parts of plants 

 which the spray cannot reach. It is the best spray 

 to use against all caterpillars that feed upon fruit 

 trees and roses in early spring, including the winter 

 and allied moths, cigar-case bearers, etc., and all the 

 leaf-eating and bark-gnawing weevils and the 

 raspberry and loganberry beetle ; and is useful 

 against the turnip-flea beetle feeding on the seedling 

 cabbages, etc. 



Where gooseberries are to be picked green lead 

 arsenate is not safe to use, but hellebore powder 

 may be dusted on the bushes attacked by goose- 

 berry sawflies, or mixed with water and sprayed on. 



It should be clearly understood that this spraying 

 should be done at the season at which the pest 

 aimed at begins its feeding ; that the insects them- 

 selves need not be covered with the poison but 

 their food must ; that trees or plants in bloom should 

 not be sprayed with lead arsenate, since bees may be 

 kiUed. 



Where codling moth attacks apples, spraying 

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