82 NEW YORK STATE MUSEUM 



Another lot of this wash was prepared March 30 and appHed to 

 18 Bartlett peartrees belonging to Mr McCoun at Oyster Bay. The 

 action in this instance was very good, becoming orange, gradually 

 changing to red and upon standing till after lunch was a very dark 

 green. There was about a quart of sediment. Upon examination 

 April 15 it was seen that the lower portions of trees i and 4 were 

 well covered. July 11 there was some breeding and the same was 

 true September 26. 



Formula j 



This wash, composed of 20 pounds of lime, 15 pounds of sulfur 

 and 10 pounds of sal soda to 50 gallons of water, was prepared by 

 placing the lime in four or five pails of hot water, following at 

 once with the sulfur and sal soda. The mixture was then stirred 

 vigorously, and in case the reaction was violent enough to threaten 

 boiling over, a few quarts of cold water were added from time to 

 time. The wash was covered with burlap as soon as danger from 

 boiling over had passed, and allowed to stand 30 minutes. It was 

 then diluted with the requisite amount of cold water. The first 

 lot was prepared March 31 and the action was comparatively mild, 

 there being no necessity of adding cold water to prevent boiling 

 over. The final color of the clear liquid of the wash was a brick- 

 red and there were about 3 quarts of sediment, mostly sand. This 

 wash was applied to five appletrees in Mr McCoun's orchard at 

 Oyster Bay. An examination April 15 showed that the first four 

 trees were pretty well covered though some twigs were missed. 

 The more thoroughly sprayed limbs were moderately white, while 

 those receiving only one application were lead-gray. July 11 there 

 was apparently no breeding in spite of the fact that the trees were 

 so badly infested by scale the previous year that a considerable pro- 

 portion of the limbs were dead. September 24 the scale was breed- 

 ing to a limited extent. 



The same wash was applied at Washingtonville April 4 to 17 

 appletrees. The reaction in this instance was slow and continued 

 about 15 minutes. The color of the clear liquid became wine-red. 

 There was very little sediment. An examination April 14 showed 

 that the first tree was fairly though not thickly covered and that the 

 application to the other trees could be classed as fair. The insecti- 

 cide was thicker on the first tree and there were no signs of washing. 

 July 13 there was very little or no breeding and the wash was still 

 evident. September 28 there was very little breeding and the 

 application seems to have been entirely successful. 



