34 



During the last part of the month snow fell instead of rain, bnt as it 

 did not adhere to the trees to any great extent, its melting- caused 

 little of the wash to be removed. 



The climatic conditions were what would be considered favH)rable 

 for the successful use of this wash. 



No careful inspection of the trees was made until Ma}^ 24, 1902, but 

 previous hasty examinations showed that a large niunber of the scales, 

 were becoming loosened on the trees and were falling to the ground. 

 On the latter date the writer inspected these trees, and was unable tO' 

 find any living scales whatever, except ^ few females which were 

 nearl}^ full grown. Ten per cent of the females that had reached this 

 degree of maturity were found to ])e alive, but on comparing the total 

 number of living scales present on the trees with the number present 

 before the trees were sprayed it appeared that at least 98 per cent had 

 been destroyed. 



In Ottawa Count}^ the lime, sulphur, and salt wash was prepared 

 by several owners of orchards, and applied to peach trees late in 

 March, 1902, with satisfactory results. In one instance, a heavy 

 storm of hail and rain fell shortly after sprajdng, and washed con- 

 siderable of the deposit from one side of the trees. The owner, fear- 

 ing that the wash would -not be effective, resprayed some of the trees 

 on this side, very lightly, with crude oil. On June 14 an occasional 

 live scale could be found, Init the treatment appeared satisfactory. 

 On examining some of the trees sprayed at the same time, but which 

 had not been respra3'ed on one side with crude oil, no perceptible 

 difference was apparent in the number of living scales present. 



A single case has been reported on Catawba Island where peach 

 twigs have apparently been injured by this wash. The spray was 

 prepared by the owner, the same formula being used as in the Wooster 

 experiments. A large block of thrift}^ peach trees was sprayed on 

 March 22 and 26, the weather following being dry and favorable for 

 the effective use of the wash. On examination June 14, the writer 

 found that many of the twigs on some of the trees had died from 4 

 inches to over a foot from the terminal bud. The foliage below the 

 dead twigs was green and healthy in appearance, but the crop of fruit 

 had been greatly reduced. The greater part of the trees in this 

 orchard, treated in the same manner, showed no injury, hence it is 

 difficult to understand the exact cause of the damage. 



The resin wash was also prepared and applied by Mr. Newell to 

 apple trees slightly infested with the San Jose scale. It was made as 

 directed in the bulletin previously" mentioned, using 20 pounds of resin, 

 5 pounds of caustic soda, and 2^ pints of fish oil, and, after boiling for 

 four hours, it was diluted with sufficient water to make 100 gallons. 

 The spraying was done January 8, and the trees were not examined 

 until May 24. At this time onl}^ a single living scale was found, 

 although several hundred scales were carefully inspected. 



