2904 Report or tHe DEPARTMENT OF ENTOMOLOGY OF THE 
Early in June active larvee were abundant on trees receiving this 
treatment. An examination of the orchards on Aug. 15 showed 
that the trees, especially the apples, were but very little better, on 
the average, with respect to the scale than the checks. Many pears, 
and some apples, were too much spotted with scale to grade as firsts. 
Similar conditions with respect to scale existed on a large part of the 
trees sprayed with kerosene-lime wash containing 15 per ct. of oil. 
The applications of Scalecide containing one part to ten parts of 
water showed some variation in their effects upon scale. Some of 
the treatments were quite as effective as the sulphur washes, while 
others were noticeably less efficient. There was hardly a tree that 
did not show more or less living scale at the base of the new growth. 
Likewise there was more or less spotting of the fruit, especially of 
the pears, but on the whole, the scale was sufficiently controlled by 
the 10 per ct. miscible oil to maintain the thriftiness of the trees 
and to insure the production of fairly clean fruit. The trees sprayed 
with the sulphur washes, while showing more or less evidence of 
living scales, had their new growth more uniformly free of scale and 
the fruit comparatively clean. The results on fruits were especially 
marked in the case of the pears, for the sulphur-treated trees pro- 
duced a remarkably clean crop while the yield from the trees sprayed 
with 10 per ct. miscible oil showed more or less spotting by the scale. 
SUMINARY OP RESUS: 
Fall applications of Scalecide and Kil-o-Scale in the proportions 
of one part to either fifteen or twenty parts of water caused no 
appreciable injuries to fruit or leaf buds. The effectiveness of these 
preparations upon the scales was variable. On the moderately in- 
fested plum trees the numbers of the scales destroyed by the sprays 
in these proportions compared favorably with the results obtained 
by the sulphur washes, while badly infested plum and apple trees 
received very little benefit by similar applications of the commercial 
preparations. In the tests conducted in the spring, applications of 
one part of Scalecide to twenty parts of water usually failed to 
control the scales, but when this spray was used in stronger mix- 
tures, of one part to either ten or fifteen parts of water, the new 
growth and fruit of the trees were kept quite clean. One applica- 
