8o 



NEW YORK STATE MUSEUM 



Formula i 



This wash, consisting of 20 pounds of lime and 15 pounds of 

 sulfur to 50 gallons of water was prepared by bringing several pails 

 of water nearly to a boil in an iron kettle, adding the lime, follow- 

 ing at once with the sulfur and stirring vigorously and maintaining 

 an active boiling for at least 30 minutes. The wash was then 

 strained and diluted to the requisite amount with cold water. The 

 first lot of this wash became a deep green before boiling was com- 

 pleted. There was more sediment than usual, about 2^2 quarts, 

 apparently mostly sand. This was applied March 31 in the orchard 

 of Mr J. T. McCoun at Oyster Bay, to 16 young appletrees in 

 row 2, the first four receiving two sprayings. The wash changed 

 to a yellowish green after being applied. An examination April 15 

 showed that the four trees twice sprayed were well covered, though 

 a few twigs were missed. The application appeared to be rather 

 thin and the trees were lead-gray. There was no sign of washing. 

 July 11 the insecticide was very apparent and there was very little 

 evidence of breeding. September 26 the trees were examined again 

 and very few young scale insects were found. 



Another lot of the wash was made April 2 and applied to row 7 

 in the same orchard. The only difference in the wash observed 

 was that the color was a red-orange instead of green after standing 

 the usual time. The coating seemed to be thinner when examined 

 April 15 than was the ca'se in row 2 and there was some more 

 breeding July II. September 23 the scale insects were breeding 

 somewhat and the conditions were not bad, although the trees were 

 very thickly infested the preceding spring. 



This wash was also applied April 4 to nine greening trees in the 

 apple orchard of C. R. Shons at Washingtonville. It began to 

 sprinkle before the spraying was completed and during the night 

 there was considerable rain till 10.30 the next morning. The trees 

 did not show much washing and when examined April 14 it was 

 seen that the general application was very good, though a trifle 

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

 was plainly evident. September 28 there was only a slight infesta- 

 tion and very little breeding. 



This wash was also applied March 30 to 13 peartrees belonging 

 to J. T. McCoun at Oyster Bay. The reaction was excellent, an 

 orange color being obtained in 10 minutes and gradually changing 

 to red-orange and in 30 minutes to a dark pea-green. There was 

 nearly a quart of sediment and this probably made trouble for the 



