EXPERIMENTS WITH KEROSENE KM! , 
b. Mr. Hubbard's formula : 
Two pounds milk diluted with six pints hot water. Take six pin! 
the milk; add. with agitation, one gallon kerosene till emulsified, then 
add the remainder of the milk and continue tin* stirring till a smooth 
emulsion is formed. This also contains 50 per cent kerosene, and i 
35 cents per gallon. 
1 experimented with the following dilutions : 
Soaps and milk, 
a. 1 gallon standard emulsion to 9 of water. 
b. 1 gallon standard emulsion to 19 of water. 
c. 1 gallon standard emulsion to H4 of water. 
d. 1 gallon standard emulsion to 39 of water. 
Zamia solution. 
a. 1 gallon standard emulsion to 4 of water. 
b. 1 gallon standard emulsion to 9 of water. 
Cost per gallon. 
Yalnes. 
Centg. 
a. 5 per cent, kerosene 3 2. 6 I 
b. 2$ per cent, kerosene 5 1.1 
: cent, kerosene 1.2 LM 0. 88 : 1.4 
d. 1$ per cent, kerosene 0.65 
Zamia. a, 5 per cent, kerosene: cost 1 cent per gallon, b. 2} per 
cent, kerosene: cost 0.5 cent per gallon. 
COMPARE I [VE 81 LBILITY. 
After standing 10 days in quiet, the soap solutions in part disinte 
grated. The oil remained in and through the soap, which formed a 
gelatinous mass. Heat and agitation reunited the ingredients. 
The milk emulsions separated into layers. The serum below easily 
united by shaking vigorously. 
Condeused milk, a: in ten days a small amount of scrum separated. 
but oil globules could not be seen : b acted but little differently, a trifle 
less serum. 
Zamia. — This in ten days showed no oil globules, but appeared about 
as well as when first made. 
EXPER] 
1. Fifty large trees badly affected with Mytilaspis, Eighty galloi 
dilution a of <i milk wore applied with a fountain pump. The second 
9675 3 
