350 Reporr or THE DEPARTMENT OF ENTOMOLOGY OF THE 
this portion was completely defoliated, while the sprayed portion 
retained its foliage until the appearance of frosts. 
Pears.—Observations on May 16 showed that pear trees receiy- 
ing this treatment had about 54 per ct. of the buds retarded. As 
the season advanced these buds opened and the foliage ultimately 
equalled that of the checks. 
Fifteen per ct. Scalecide: Apples.—Seven trees were treated 
just before the buds commenced to swell. An examination on 
May 15 showed that about 75 to 100 per ct. of the buds were 
retarded. With the advancing spring this difference became less 
apparent and in the late summer the foliage was much better 
than that of the checks. 
Pears. 

An application of this percentage to four trees gave 
results similar to those obtained with the apples described above. 
The trees, however, made a vigorous growth during the summer. 
SUMMER APPLICATIONS. 
Beginning June 20, a series of applications was made to apples, 
pears, peaches and plums using the 3 per ct., 5 per ct. and 71% 
per ct. solutions. During the few days following each spraying 
the weather conditions were very favorable. 
Results: On peaches, 3 per ct., 5 per ct. and 71% per ct. Scalecide, 
—The foliage on the trees receiving applications of the-3 per ct. 
Scalecide showed severe burning. The general appearance of the 
leaves was as if punctured by hail stones. The fruit which had 
become sizable was uninjured. 
The five per ct. solution affected the foliage in a manner some- 
what similar to that described above. The fruit however was 
badly burned and did not develop. 
Applications of the 744 per ct. Scalecide entirely defoliated the 
trees. 
On apples, with 3 per ct., 5 per ct. and 71% per ct. Scalecide.— 
The apple leaves on the trees receiving the several treatments were 
severely burned and the fruit marked with black corky spots. The 
injured fruits grew to a good size but were imperfect. The injury 
by the different sprays was equally severe. 
On pears, with 3 per ct., 5 per ct. and 71% per ct. Scalecide.— 
Pears were injured in much the same manner as the apples. The 
