290 Reporr oF THE DEPARTMENT OF ENTOMOLOGY OF THE 
a suitable place to settle down. Thus on the treated trees a 
few of the adults always escaped but a large percentage of the 
young were evidently unable to survive. This was indicated by 
the fact that during the summer live scales were found in pro- 
tected places and although they produced young but little evi- 
dence could be found that the young had survived. The final 
examination showed only an occasional live scale and these were 
invariably upon the new growth, showing that the young that 
survived were those that had succeeded in reaching the new 
growth. 
Comparing the treated with the untreated trees, the scales on 
the latter had multiplied rapidly during the summer, causing 
these trees to look sickly and in some instances nearly resulting 
in their death. The treated trees had recuperated somewhat 
from the previous injurious effects of the scale and had made a 
very good growth. The foliage also was fairly abundant and 
the crop of salable fruit in excess of that on the untreated 
trees. 
Effect of the weather wpon the wash.—As shown on page 398 
there was but one heavy rain during the first four weeks after 
the trees were sprayed, and that was immediately after the work 
was completed. It evidently had but little effect. There was 
also no evidence of the washing off of the mixture until during 
May, when it began to disappear slowly as a result of frequent 
rains. A dirty gray residue remained upon the peach trees 
throughout the season. It showed very plainly August 2. The 
smooth bark of the plums, however, did not retain a residue 
as readily and nearly all the trees had been washed clean by the 
time the final examination was made, although they remained 
white for nearly three months after being sprayed. The only 
evidence that the wash had been applied was on the trunks and 
in protected places on the larger limbs where a thin coating was 
still adhering. 
ORCiTARD Il, COLUMBIA COUNTY, PLUMS AND PEACHES. 
This orchard consists of a small block of trees situated about 
two miles southeast of Kinderhook. Forty-seven trees were 
selected for treatment, including 36 plums and 11 peaches. The 
