298 Report of THE DEPARTMENT OF ENTOMOLOGY OF THE 
Effect on the scale.— The effect upon the scale has already been 
indicated. If the treatment had not resulted in killing nearly 
all the scales the fruit would have shown more of it. Careful 
examinations of the trees, however, failed to reveal more than 
a very few living scales and on most of the trees no live scales 
were found. An especial effort was made to test the wash in 
this orchard and to this end a number of the worst infested 
twigs were marked, with the result that no live scale was found 
on any of them. The prompt action of the wash was also indi- 
cated by the fact that the scales had apparently not grown since 
the treatment was made, but were killed while still in the 
hibernating stage. 
Effect of the weather upon the wash.— This orchard afforded an 
excellent opportunity to observe the effect of the weather upon 
the wash as it is easily accessible from the Station. During the 
first few months there was practically no change in the appear- 
ance of the treated trees. During July the residue was noticed 
to be flaking off somewhat, especially on the smaller branches. 
With the exception of some of the small twigs and branches the 
trees remained well coated throughout the summer as indicated 
by Plate XXXVIII, which is from a photograph taken Novem- 
ber 8. The trunk and limbs were of a whitish color from the 
presence of the residue of the wash still remaining. AJIl of the 
trees in the orchard were as well covered with the white coat- 
ing as this one at the time the picture was taken. The condi- 
tion of the branches is indicated by Plate XX XIX, which shows 
the under surfaces of two branches cut and photographed No- 
vember 8. These branches were cut almost at random and it 
is believed that they are typical of the branches of all the trees. 
As these pictures indicate, the trees throughout the orchard 
remained white during the entire summer in spite of the fre- 
quent and. often heavy rains characteristic of the season.. 
MISCELLANEOUS APPLE TREES. 
This lot consists of 15 trees in the Station apple orchard 
which were very slightly infested with the scale. They repre- 
sent nearly fifteen different varieties. Most of them are young 
trees that have recently come into bearing. All were in ex¢el- 
