REPORT OF THE STATE ENTOMOLOGIST 1902 141 
been equally good. It will require more than one season’s work 
to determine the exact status of this material in New York 
State, and at present we can only advise its use in a provisional 
manner. 
Experiments at Highland. A number of young plumtrees, 13 
Abundance and 13 Burbank, were sprayed Ap. 1 with the lime, salt 
and sulfur mixture prepared according to the formula given above. 
Some trouble occurred in this case, because the boiler was small 
and would not hold 10 gallons at once. It was therefore impossible 
to add all the lime and salt and boil for half an hour. The matter 
was further complicated by the boiler leaking after a part of the 
lime and salt had been added and boiled perhaps for 25 minutes. 
The whole had to be removed, placed in a barrel, the additional 
lime and salt added, and then to that was added considerable hot 
water, and the mixture covered and allowed to remain undis- 
turbed perhaps an hour in the hope that the heat would com- 
plete the chemical action. The trees sprayed with this mixture 
were completely dry. The day was sunny and rather cool with 
considerable wind. All of the trees were sparsely infested with 
San José scale. No rain fell till the 6th, when there was a pre- 
cipitation of % inch, and from then to the 11th an additional 
134 inches fell. The weather was such that no spraying had 
been possibie since the first treatment. 
An examination of the sprayed trees July 7 showed that there 
were very few living young, and that the mixture was apparent 
on the trees only as slightly white particles, which rendered the 
detection of the white, young scale insects very difficult. The 
application has undoubtedly killed a large proportion of the 
insects. Some other trees sprayed with lime, salt and sulfur, 
said to have been prepared according to the same formula but 
boiled only about half as long, were examined. The insecticide 
was much more apparent on the latter, and possibly it was more 
effective. In neither case did the mixture injure the fruit buds. 
An examination Nov. 25 showed that the experimental trees 
were in excellent condition and, if anything, perhaps a little 
treer from the scale than those treated under similar conditions 
with the 20% mechanical petroleum emulsion. The trees above 
the experimental row were also sprayed later with lime, salt and 
sulfur mixture, which was boiled for a relatively short time, and 
considerable of the mixture was still to be seen on the northeast 
