New York AGRICULTURAL EXPERIMENT STATION. 989 
Results on peaches.— The trees were carefully watched and fre- 
quent examinations made during the spring and summer. ‘The 
final examinations were made August 2. Early in the season 
there appeared to be evidence of injury. The buds of the treated 
trees were about a week later in opening than those of the un- 
treated trees. When once well started, however, there was no 
further delay and the treated trees were soon as full of blos- 
soms and the foliage as abundant as on the check trees. By 
the time the final examinations were made the treated trees 
were in much better conditions than the checks. There 
was not the slightest evidence of injury. The rapid mul- 
- tiplication of the scales had resulted in added injury to the un- 
treated trees, especially those that were most extensively in- 
fested early in the season, while the checking of the insects by 
the treatment had permitted the sprayed trees to recuperate to 
some extent. 
Results on plums.— Except for very slight injury to the fruit 
buds, the effect upon the plums was practically the same as 
upon the peaches. The buds were delayed in opening about the 
same length of time. Although there was very little fruit upon 
any of the plum trees, it was uniformly somewhat more scarce 
upon the treated trees than upon the untreated trees, thus in- 
dicating slight injury to the fruit buds. 
Liffects on the scale.— The effect upon the scale was evidently 
of a two-fold nature, an immediate and a secondary effect. The 
immediate effect is the death of all or nearly all of the scales 
with which the mixture comes in contact within a few days 
after the application is made. This was shown not only by the 
fact that but very few live scales could be found within a week 
after the treatment was made but also from the fact that later 
examinations showed the scales to have been killed while still 
in the hibernating stage. As the treatment was made only a 
short time before the scales would normally have begun to 
enlarge the effect must have been fairly prompt. 
The secondary effect appears to have been a purely mechani- 
cal one caused by the abundance of residue adhering to the 
trees, which prevented the newly hatched young from finding 
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