344 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
doubtedly to using the solution too strong. No live scales were 
found although the tree was badly infested at the time of treat- 
ment and was carefully examined twice during the summer. 
LIME-SULPHUR-SALT WASH AND BORDEAUX MIXTURE. 
The lime-sulphur-salt wash was made in the usual way and 
after removing from the fire a solution of copper sulphate in 
water was added in the proportion of one pound of copper sul- 
phate to 1i gallons of the mixture. The result was a heavy 
greenish wash. One tree was sprayed. 
Results.—Although the wash was quite heavy it sprayed easily 
and formed, when dry, a heavy greenish coating on the bark. 
This combination adhered as well if not better than the lime- 
sulphur-salt wash alone. The leaves and twigs were injured 
somewhat; as was to have been expected, for the wash was 
used at winter strength. The treatment was evidently a success 
in killing the scales as no live scales were found, although the 
tree was one of the most extensively infested of any in the 
orchard, and was carefully examined three times during the 
season. 
POTASH-SULPHUR WASH. 
This wash has been successfully used in California and for 
this experiment was made as directed. The formula and direc- 
tions are as follows: 
ATER STICUB OBL Bop Law NL eps shies UN ee + ounce. 
PRO TAR ey Ve eo edie: cide oi nedat tinue’ # ounce. 
Sarpy a hie Ne. fe Th eae ara ae 21 ounces. 
Wihateor soap Ak err ee Sete we 1 pound. 
Waters ote dttcnr esr fies. ee reerie 5 gallons. 
The ingredients were boiled together for one and one-half 
hours and applied hot. Two trees were treated. 
Results.— There was no evidence of injury to the trees except 
a slight burning of the foliage. The trees were examined twice, 
May 14 and August 7, but only an occasional scale was found on 
either date. The wash weathered off within two or three weeks 
and left the bark clean and smooth. 
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