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| _Carbolic acid emulsion._--Soap, 1 lb.; water, 1 gal.; crude carbolic | ||
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Chapter 3. PROTECTING PLANTS FROM THINGS THAT PREY ON THEM | 
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acid, 1 pt. Dissolve the soap in hot water, add the carbolic acid, and agitate into an emulsion. For use against root-maggots, dilute with 30 parts of water.
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| _Kerosene emulsion._--Hard, soft, or whale-oil soap, 1/2 lb.; water, 1 |  |
_Soaps._--An effective insecticide for plant-lice is _whale-oil soap._ |