New York AGRICULTURAL EXPERIMENT STATION. 293 
the other orchards. The trees were carefully examined during 
the season, however, but only on two trees were live scales 
found, and these were very few in number. A1Il the other trees 
seemed to be free from the insects, although this could not be 
determined positively in one season. The fruit showed no evi- 
dence of the scale. 
Effect of the weather upon the wash.— It will be observed that, 
owing to the severe rains during the thirty days immediately 
following the spraying of this orchard, the wash was subjected 
to a severe test, but that in spite of this fact the killing effects 
were apparently not diminished. In this orchard the mixture 
was washed off from the plums somewhat more readily than 
from the peaches, but all of the trees remained white for more 
than two months. On July 30 when the final examination was 
made there was sufficient residue adhering to the bark of all 
of the trees to give them a dull gray appearance, especially upon 
the trunks and larger limbs. 
ORCHARD III, COLUMBIA COUNTY, PEARS. 
This orchard is situated in the village of Kinderhook. It con- 
sists of 82 pear trees, 35 of which were encrusted with the scale 
and much weakend by it. The remainder were badly infested 
but not encrusted. The varieties include Bartlett, Keiffer and 
Burre Bose. The Bartlett and Burre Bosc had the most scale, 
the Keiffers being only slightly infested. The trees have been 
planted about eight years, but owing to neglect have made a 
very poor growth, and many of them were much weakened by 
the scale. During the past two years, however, the orchard has 
received more attention, with the result that, except for the 
scale, the trees were beginning to show signs of improvement. 
A short time before the spray was applied the trees were well 
trimmed. | 
_ Checks.— The checks consisted of about a dozen each of plum, 
pear and apple trees in the immediate vicinity. They varied in 
degree of infestation from very slightly to about the same degree 
as the most extensively infested in the experimental orchard. 
Conditions.—— The trees were sprayed April 1 and 2. The buds 
were well swollen, but none of them had burst. During both 
