390 Report OF THE ENTOMOLOGISTS OF THE 
RESIN-LIME MIXTURE. 
A formula for making a spraying mixture to be used on cab- 
bage was given in Bulletin No. 120 of this Station. Notes on the 
use of the same mixture were also given in the Fifteenth Annual 
Report under the heading “‘ Notes on Cabbage Plusia and Reme- 
dies for the Same.” Tests of this mixture are now complete, 
hence all previously published tests are repeated at the present 
time. In the published notes above referred to, this mixture is 
called a ‘‘ Poisoned resin-lime mixture.” This name is appropriate 
only when the mixture contains Paris green or other arsenites and 
is used against leaf-eating insects. As the mixture is likely to be 
of value in other ways than as a carrier of insecticides a more ap- 
propriate name will be simply resin-lime mixture. The name can- 
not be shortened more than this for the reason that we already 
have a resin mixture which is used against scale insects and a dis- 
tinction must be made between the two. 
PREPARATION. 
The resin-lime mixture is prepared as follows: 
Stock Solutton.— 
Pin verizon esilise Ns A says ete te eet eee 5 pounds. 
Concentrated lye. ..2.21. se tee eee 1 pound. 
Fish oil or any cheap animal oil except tallow 1 pint. 
Wreatere eu. 25 artes ak ee we eee 5 gallons. 
It takes about 2 hours to prepare this mixture. The oil, 
4. more gallons of hot water! should be placed in iron kettle 
and heated until the resin is softened, after which the solution of 
concentrated lye,” or potash, should be carefully added: and the 
1In the bulletin and report above referred to it was recommended that the 
oil and resin be placed in the kettle and heated before adding the water. The 
resin is softened most readily by this method but the oil and resin get so hot, 
that, when water is added, the latter is converted into steam and the whole 
mass is liable to be thrown out of the kettle. . 
2 The solution of lye should be prepared according to the formula for mak- 
ing hard soap, which is always given on the can. 
