220 Report or tHe DEPARTMENT OF ENTOMOLOGY OF THE 
various preparations were not always uniform in their com- 
position. 
With lime-sulphur wash.—This formula was uniformly effec- 
tive and gave results which were similar to those attending the 
use of boiled lime-sulphur-salt wash. 
With lime-sulphur-caustic soda washes.—The applications of 
these sprays efficiently controlled the scale, giving results which 
were practically the same as those obtained by the boiled lime- 
sulphur salt wash. The destruction of the scale upon the apples, 
pears and plums with smooth bark seemed complete, but upon 
the Burbanks there was a small percentage of the fruits that was 
infested. 
ORCHARD III. 
Results on trees——An examination of this orchard on May 13 
showed that there was no apparent difference in the appearance 
of the sprayed and unsprayed peach trees, that previous to treat- 
ment were free from or only slightly infested with scale. The 
blossoms and leaves were normal. Trees weakened by the scale 
were usually much injured or killed by the winter. At this date 
there were traces of leaf curl upon such varieties as Carman, 
Champion, Elberta, Hiley, Greensboro, and Mountain Rose. On 
May 30, Mr. Sirrine made a careful examination of the conditions 
of the trees with respect to the leaf curl and estimated that 
nearly 55 per ct. of the foliage upon the unsprayed and one per 
ct. of that of the sprayed trees were affected by this disease. By 
July 23 these differences had disappeared, and crop yields and 
foliage were apparently the same for the sprayed and unsprayed 
trees. The apple leaf buds and fruit buds were unaffected by the 
sprays. With the advance of the summer there was a marked 
increase in the vigor and healthfulness of the sprayed apple 
trees in comparison with that of the checks. 
Results on scurfy bark louse——This species was almost entirely 
destroyed upon the trees sprayed with a sulphur wash. 
Results on San José scale—The lime-sulphur-salt wash, the 
lime-sulphur wash, and the lime-sulphur-caustic soda wash were 
equally effective. The applications upon the peach trees almost 
entirely controlled the scale. Upon a few trees in all of the 
different lots small numbers of larve were found, which was 
probably due to lack of thoroughness in treatment. Comparing the 
