3760 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
by the mite have been noticed for four or five years, and the 
Greenings have been the variety most affected. The owner re- 
ports that the worst infested trees suffered more or léss prema- 
ture dropping of the foliage, and believes that this partial defolia- . 
tion has retarded the growth of the trees. It is also thought that 
through the unsatisfactory condition of the leaves there have been 
some losses in the crop yields by the dropping of young fruits 
and the failure of the apples to attain full size. . 
For the treatment of the trees the home-made concentrated lime- 
sulphur wash, diluted with nine parts of water, was used, and the 
application was made on April 11. The buds were generally well 
swollen and many were beginning to show green at the tips. The 
spraying was carefully done; on drying, the trees appeared to be 
competely whitewashed. The quantity of mixture applied to each 
tree averaged from seven to eight gallons. Hand-power machinery 
was employed. Several trees of each variety were left unsprayed 
which served as checks. 
Results on mite.— Judging from the condition of the foliage of 
the checks, the mites were not generally as abundant in this or- 
chard as in the preceding year. The trees showed a marked varia- 
tion in the quantity of diseased leaves; while some trees were quite 
seriously affected others were almost free of injuries or had only a 
small proportion of the leaves spotted by the mite. These differ- 
ences in the condition of the checks preclude an exact estimate 
of the benefits derived by the trees sprayed with the lime-sulphur 
wash. But in comparison with the checks the work of the mite on 
the sprayed trees was uniformly less conspicuous and there were 
none of those striking differences in the amount of infestation of 
the foliage so apparent on the untreated portions of the orchard. 
Spotting of the foliage was largely limited to occasional. leaves or 
to clusters of leaves on widely separated branches. It is reason- 
able to suppose that while some other agency may perhaps have 
checked the work of the mite in certain parts of the orchard the 
uniform freedom of the sprayed block from injuries by the mite 
must be largely attributed to the treatment with the lime-sulphur 
wash. As noted in Orchard II it was also observed in this experi- 
ment that owing to the reduction in the quantity of diseased leaves, 
the foliage of the sprayed trees presented a more thrifty appear- 
ance, and the new growth was apparently more heavy than that 
on the checks. 
