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Rosin For “ scale ” and other small sucking 
Compound, insects, rosin compound is a simple and 
effective insecticide. Powder 2 lbs. of 
rosin, and boil 1 lb. of washing soda crystals in a 
gallon of water. Add the powdered rosin to the 
boiling soda solution and keep the mixture boiling, 
adding more water at intervals as the liquid 
boils up, until the mixture turns clear, like thin 
■coffee. This will make about 3 gallons of solution, 
which should be diluted in the proportion of one 
part to eight of water for spraying. 
Tobacco One pound o'f tobacco stems steeped in 
Wash. four gallons of hot water and cooled, 
to which four ounces of soap is added, 
makes a simple wash for Thrips and other small 
sucking insects. 
Derris. For small caterpillars and sucking in- 
(“ Tuba ”). sects, where a simple wash is required, 
the derris spray can be made on the 
spot, using the following proportions: — Derris root 
(4 — 5 lbs.), soap (2 lbs.), water (50 gallons). 
Cut the derris root into small pieces and pound to 
a pulp in a mortar with a little water. Enclose the 
pulp in a cloth and squeeze well in a larger quantity 
of water. To the extract obtained by the above 
process add the soap, which has been dissolved in 
a little hot water. Then dilute to 50 gallons. 
Soap This is the simplest insecticide ob- 
Solution. tamable and is quite effective for many 
Aphids and small sucking insects. One 
pound in 5 gallons of water is an average strength. 
