198 Report oF THE DEPARTMENT OF ENTOMOLOGY OF THE 
more healthy and abundant. Upon close inspection it was found 
that the principal cause of this difference was that the early 
spring leaf-eating caterpillars had been much more destructive to 
the foliage of the check trees. 
In the past this orchard had been somewhat neglected, and 
these insects seemed to have had full sway as indicated by their 
work upon the untreated trees. These results were entirely 
unexpected, and were a great surprise to the observers. To 
those on the ground there was forced the conclusion that the 
treatment with the sulphur wash had greatly reduced the num- 
bers of these insects. To cbtain data upon the condition of the 
foliage at that time Mr. Taylor collected samples of leaves which 
were representative of the sprayed and unsprayed trees, and 
after a careful examination reported the results given in the 
following table: 
Taste No. IIJ.—A ReEcorpD oF THE CONDITIONS OF FOLIAGE UPON 
SPRAYED AND UNSPRAYED TREES. 
————s 
Larvee of 
TREATMENT Leaves | Teaves | LVS | Leaves | bud Case 
= ‘ Leaves. not oe not pas aes bearers 
OF TREES. iajured. injured. ete injured. matey on“leagee 
No. No. No. Per ct. | Per ct. No. No. 
Spravedernert os rere 96 84 12 refered 12D 0 6 
Gheckigtaees nrc ones 120 | 31 89 25.8 74.2 8 35 
On June 9, Prof. Beach and Mr. Taylor again visited the 
orchards to make further observations. The condition of the 
trees was much the same except that the foliage of the unsprayed 
trees did not appear to be so completely worm-eaten as before, 
because of the appearance of new leaves which at this time were 
not much affected by the insects. The uninjured leaves were 
as a rule of recent appearance. Representative clusters of leaves 
and fruits were gathered from treated and untreated trees and 
examined as before. The results of the examination are given 
in the accompanying tables: 
