102 INJURIOUS INSECTS. 



'' On ^Cabbage. In subsequent tests upon cab- 

 bage, the mixture with Paris green was used upon 

 one farm in comparison with Bordeaux mixture, 

 Bordeaux mixture and Paris green, Paris green and 

 resin mixture without lime and with an application 

 of salt ; and upon another farm with Bordeaux mix- 

 ture and with an application of Paris green and 

 flour. The cabbages were sprayed twice, once late 

 in August and again about eighteen days later. The 

 results were surprisingly in favor of the resin mix- 

 ture and Paris green. This, on all plats, was per- 

 fectly effective against the cabbage worms and only 

 slightly less so against the cabbage loopers. The 

 Bordeaux mixture, even when united with Paris 

 green, and the flour and Paris green were of little 

 advantage so far as the loopers were concerned, 

 although quite destructive to the cabbage worms. 

 The loopers evidently were able to avoid the spots 

 poisoned by the dry powder and to find plenty of 

 food which the poison had not touched or from 

 which it had been blown. The salt was of no value 

 whatever, as it only caused the worms to leave the 

 cabbages and to pupate a little earlier than they 

 would naturally do. It was estimated by the owner 

 that the plats treated with the poisoned resin mix- 

 ture yielded 100 per cent, better than the untreated 

 plats and at least 60 per cent, better than those pow- 

 dered with Paris green and flour. 



On Cauliflower. The tests on cauliflower have 

 not been as thorough nor the results as marked. The 

 erect, crowded position of the leaves of the cauli- 

 flower makes it difficult to secure a perfect film of 

 the mixture on the entire surface ; and the mixture 

 must not be applied after the "flower" is exposed 



