New Yorx AGRICULTURAL EXPERIMENT Station. 163 
Tn no other orchard examined have the trees been so uniformly 
affected as in this one; perhaps because in no other case have 
the soil and conditions been so uniform. In general, trees af- 
fected in varying degrees up to one-half of the foliage have been 
found freely intermingled with perfectly healthy trees; but when 
an orchard was situated partly on dry and partly on moister 
soil, the disease was invariably worst on the trees standing in the 
dry soil. 
In one orchard of large trees of Montmorency the disease was 
confined chiefly to the lower branches. A cherry grower at 
Hector states that in his orchard the trees were generally affected 
upon the south side, but in the orchards about Geneva we have 
not observed that the south side of the tree is more often affected 
than any other side. Trees standing in exposed situations have 
been no more affected than sheltered trees. 
As to the time the injury occurred there is a difference of 
opinion among fruit growers. Some believe that the injury came 
on gradually, but the majority are of the opinion that it occurred 
within a comparatively short space of time. Some say it occurred 
early in August, others about the middle of August and one is 
certain that his orchard was not affected until the first week in 
September. It is not improbable that there were two periods 
when the weather conditions were favorable to the scorching of 
foliage. One occurred some time during the first half of August 
and the other on Sunday, September 3. On the latter date 
the temperature was high, the air dry and a strong wind blow- 
ing. The writer expected much injury to result from this, but 
observed none whatever. Nevertheless, cherries in some situa- 
tions may have been injured. 
Some have attributed leaf scorch to over-bearing, but there is 
no evidence to support this theory. In many cases trees which 
have never borne fruit have been severely affected. It is possible 
that fruit-bearing tends to increase the liability to the disease, 
but even that remains to be proven. 
