EXPEEIMENT STATION EEPORT. 585 



and sprayed it on a badlj-infested plum tree. Used so little water 

 at first that the nozzle clogged, then allowed it to settle a little 

 and poured off the liquid, which was then sprayed. On the 18th 

 the foliage was slightly burned ; the powdery coating on the bark 

 showed obviously where the mixture had been applied, and while 

 there were some crawling larvse and recent sets some scales ap- 

 peared to have been killed. On the 25th injury to foliage had 

 intensified, while lan'a3 and recent sets were as abundant as ever. 

 September 29th made up another lot of the mixture and sprayed 

 a small, badly-infested peach tree, which had plenty of crawling 

 larvse and recent sets. The tree had had a coating of carbolic acid 

 on the trunk earlier in the season and showed a powdery, white 

 appearance after the application had been made. jSText day the 

 powdery appearance was quite as well marked, but there were as 

 many crawling larva? as before and there was no evidence that any 

 benefit had been derived. 



Miscellaneous. 



White hellebore and ground tobacco were tested as to their effect 

 upon root-maggots on cabbage and . onions, but the details of the 

 experiments come rather with the account of these insects. The 

 materials to be used were purchased by the Station and sent di- 

 rectly ^o the gi-(n\'ers who had ;igreed to use them in accordance 

 with directions. Mr. Dickerson, under instructions, visited each 

 of them, and explained carefully what was desired, besides leaving 

 a typewritten sheet on which everything was also set out in detail. 



liime and Sulphur "Waslies. 



These combinations j\Ir. Dickerson has found in very general 

 use, especially in peach orchards. The wash has been made in 

 various ways and the ingredients were used in varying pro|X)r- 

 tions. Within certain limits this variation does not seem to impair 

 effectiveness, and where carefully made and applied the results 

 have been satisfactory on peach, and to perhaps a slightly less 

 extent on plum and young apple trees. Where it has been applied 

 to old apple and pear trees on which the bark has become rough and 

 scaly, the results, on the whole, have not been satisfactory, except 

 where very thorough applications have been made with great forqe^ 



