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When small quantities are made, emulsify with an ordi- 
nary egg-beater. 
To be sure of success, use clean dishes and clean water.. 
WIIALE-OIL SO/\r. 
This substance stands close to kerosene emulsion in 
importance as a destroyer of soft bodied insects. It is used 
in various strengths, but the ordinary preparation is: 
Whale-oil soap i pound. 
W ater 8 gallons. 
As a winter wash, it is sometimes used as strong as two* 
pounds in a gallon of water for the destruction of San Jose 
and other scales. A pound to eight gallons destroys the 
eggs of plant lice or of the Brown Mite. 
TOBACCO. 
Tobacco has long been used in one way or another for 
the destruction of insects. Its chief use seems to be for the 
destruction of animal and plant lice. When slowly burnt, 
the smoke may be utilized for the destruction of lice on 
plants in green-houses or window gardens. In the form of 
a fine dust it is often effectual in ridding plants of flea- 
beetles and in the form of dust or stems is probably the best 
remedy we have for Wooly Aphis on the roots of apple 
trees. 
I have a letter from the A. B. Mayer Manufacturing 
Co., of St. Louis, Mo., offering tobacco dust at $20.00 a ton. 
f. o. b. cars in that city. 
I’YRETiiRUM (Buhach, Persian Insect Powder.) 
This substance, under one of the above names, can be 
obtained at almost any drug store. It consists of the dried 
flowers of two species of plants of the genus Pyrethrum 
which are ground into a very fine powder. The powder has. 
the peculiar property of killing almost any insect that it 
comes in contact with while it is not poisonous to other ani- 
mals. If applied in water use 
Pyrethrum i oz. 
Water 3 gallons. 
In most cases I prefer to use this substance dry and un- 
