. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. EXPERIMENTS WITH KEROSENE EMULSIONS. 6S b. Mr. Hubbard's formula: Two pouuds milk diluted with six pints hot water. Take six i)ints of the milk; add, with agitation, one gallon kerosene till emulsified, then- add the remainder of the milk and continue the stirring- till a smooth emulsion is formed. This also contains 50 per cent, kerosene, and costs. 35 cents per gallon. I experimented with the following dilutions: iSoaps and milk. a. 1 gallon standard emulsion to 9 of water. b. 1 gallon standard emulsion to 19 o
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. EXPERIMENTS WITH KEROSENE EMULSIONS. 6S b. Mr. Hubbard's formula: Two pouuds milk diluted with six pints hot water. Take six i)ints of the milk; add, with agitation, one gallon kerosene till emulsified, then- add the remainder of the milk and continue the stirring- till a smooth emulsion is formed. This also contains 50 per cent, kerosene, and costs. 35 cents per gallon. I experimented with the following dilutions: iSoaps 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 24 of water. d. 1 gallon standard emulsion to 39 of water. Zamia Holution. a. 1 gallon standard emulsion to 4 of water. b. 1 gallon standard emulsion to 9 of water. Values. «. 5 per cent, kerosene . 6. 2^ per cent, kerosene. c. 2 per cent, kerosene . d. Ij per cent, kerosene. Cost per gallon. Whale-oil soap. Rosin a Milk. I h Zamia. a, 5 per cent, kerosene; cost 1 cent per gallon. 6, 2i per 3nt. kerosene; cost cent per gallon. cent. COMPARATIVE STABILITY. 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. Condensed milk, a : in ten days a small amount of serum 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. EXPERIMENTS. 1. Fifty large trees badly affected with Mytilaspis. Eighty gallons of dilution a of a milk were applied with a fountain pump. The secoiit'i 9675 3. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrati
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