764 Report oF THE ENTOMOLOGIST OF THE 
Kerosene washes are of two sorts, and the formule are usually 
given for stock solutions. These are, first: 
Kerosene and Soap Emulsion. 
Heergsene 65:47. Sis iid eoleed i et cial Benen 2 gallons. 
BORD cosa citetinte die inate ly ese ats bee een 4+ pound. 
Wiaber (SOLE). ot eis. Sche ities eee ae 1 gallon. 
The soap should first be dissolved in the water by boiling. 
Remove from stove and while hot add the kerosene. The mix- 
ture should be violently agitated, either by churning or by being 
pumped back into itself. This should be continued for 5 or 10 
minutes, or until the mixture has the consistency of cream. 
Where rain-water can not be had, a little lye or more Be should 
be used to “break” the water. Second: 
Emulsion of Kerosene and Sour Milk 
Kerosene 1. ies ices Oe he ae ee 2 gallons. 
Mal kaise hel. (peal hie Al a 1 gallon. 
This simply requires churning without heat. Sweet milk may 
be used by adding a little vinegar. The second emulsion will 
not keep as long as the first. 
These stock solutions should be diluted with 10 to 20 parts 
water when used, depending on the susceptibility of the foliage 
to injury from the emulsion and the kind of insects to be treated. 
The soap emulsion becomes hard by standing, and should be dis- 
solved in a little hot water when wanted for use. Care should 
always be used not to have free oil in any of the emulsions. 
Resin wash. 
Cc Weapon Se ieier ak se AC HG Us ge rer deen kl ea, 20 pounds. 
Caustic soda,.......... fc aN el ed Nea 5 pounds. 
BISA Olly) i ih ra Ari ciate Secale A mele Rae 4 pints. 
Wiatersto make, ssa kG ey, anes 100 gallons. 
The resin and caustic soda should be finely broken up to help 
in dissolving them. They should be put in an iron kettle with 
the fish oil and water enough added to cover the whole. The 
boiling should be continued from one to two hours or until the 
compound will mix with water without forming yellowish flakes. ~ 
