802 Report or tHe DEPARTMENT OF ENTOMOLOGY OF THE 
few rows from these trees there was practically no scale, al- 
though the trees had been badly infested. 
Effect of the weather upon the wash.— For about two months 
the trees remained nearly if not quite as white as when first 
sprayed. As late as June 21 Mr. F. G. Whitney, the owner of 
the orchard, who had carefully watched it, wrote that the 
sprayed trees did not seem to be affected by the rain. The only 
effects of the weather, so far as the general appearance of the 
trees was concerned, was the cracking and flaking off of the 
white coating on some of the branches, apparently the result of 
whipping in the wind. When the trees were finally examined 
in August the mixture was washed nearly off from the most 
exposed areas, giving the trees a dirty gray appearance. On 
most of the smaller branches it had disappeared altogether. In 
this orchard it was again demonstrated that while the wash 
adheres long enough to prove an effectual check to the scale in 
spite of heavy rains, it does not remain as long on pear and 
peach trees as upon apple, due apparently to the difference in 
the bark. 
SUMMARY OF EXPERIMENTS IN SERIES I. 
These experiments were conducted in six orchards located in 
different parts of the State as follows: On Long Island near 
Riverhead, in the upper Hudson Valley near Kinderhook, Co- 
lumbia County, in western New York in Ontario County and near 
the extreme western part of the State in Niagara County. Seven 
hundred and ten trees were treated, of which 251 were peaches, 
including 11 varieties; 129 plums, Japan varieties; 284 pears, 
including about six varieties; and 46 large Baldwin apple trees. 
The work of spraying was begun on Long Island the last week 
in March and the last trees were sprayed in western New York 
about the middle of April. While the trees were being sprayed 
in two of the western New York orchards there were heavy 
rains before the work was finished. In all the localities the 
rainfall was heavy during the first thirty days after the treat- 
ment. With the exception of the one orchard at Kinderhook, 
which was not retouched, the trees were thoroughly sprayed 
once and retouched twice. 
