‘New York AGRICULTURAL EXPERIMENT STATION. 309 
ments an average gain of 31.2 per ct. of sound fruit was made 
over the checks and trees treated with sulphur alone. 1t is obvi- 
ous, that, in instituting a system of spraying for the treatment of 
apples, with the control of the San José scale by the sulphur 
washes as its central object, provision should be made for the 
usual applications of the arsenieal sprays to prevent losses from 
the codling moth. 
Results on San José scale.—As will be seen from the table the 
percentage of infested fruit upon the sulphur-treated trees is high. 
This was rather to be expected from an experiment conducted in 
the manner that this was. As provided for by the plans, nearly 
one-half of the number of trees, all well infested and comprising 
the central portion of the-orchard, were left unsprayed. These 
it is likely, were a source of reinfestation to the adjoining trees, 
migration of the young lice being made possible by the wind and 
by the overlapping of the branches with the maturing of the 
fruit. Upon the Greenings 72.8 per ct. of the fruit on the trees 
not treated with sulphur washes was infested, as compared 
with 35.5 per ct. of the fruit upon the treated trees. There was 
also a marked difference in the relative amounts of the spotting 
of the fruit by the scale. The fruit of the unsprayed trees was to 
a large extent discolored by reddish blotches while much of that 
of the sprayed trees was barely blemished, but yet sufficiently 
marked to be classed as infested. All the fruit of the Baldwins, 
sprayed and unsprayed, was infested. The differences in the 
extent of infestation, noted with the sprayed and unsprayed 
Greenings, also held true with the Baldwins. The less satisfac- 
tory results upon this variety of fruit are in part attributable to 
the larger size of the trees, which undoubtedly prevented thor- 
ough spraying of the upper portions of the trees; and in part to 
the more extensive overlapping of the heavy-ladened branches 
with unsprayed trees in adjoining rows, which facilitated rein- 
festation. 
‘Results on scab.—On June 24 the apple scab fungus was quite 
abundant upon the foliage of the check trees but its presence 
upon the sprayed trees was more difficult of detection. On July 
8 the disease was for the first time recognized upon the fruit, 
but at this date there was no apparent variation in the amount 
‘of infection of the apples under’ different treatment. About 
