APPENDIX iii 



III. TO DESTROY INSECTS 

 i. BrsuLFiD OF CARBON 



For weevils and other insects in corn, cowpeas, or other grain or seed stored in 

 tight cribs or bins. 



About one teaspoonful of liquid to each one or two cubic feet of 

 space ; pour the liquid into an open shallow can placed on top of the 

 grain ; cover the grain with cloth. The liquid evaporates and the heavy 

 fumes settle downward. The fumes are very inflammable ; hence, keep 

 all lights and all smokers away until the odor has disappeared. 



2. PARIS GREEN 



For biting insects, including the potato beetle, and other insects eating the 

 leaves of field crops, vegetables, or fruits. 



Dust on as a dry powder Spray with 



Paris green, i pound. Paris green, \ pound. 



Slacked lime or flour, 10 to 40 pounds. Lime, \ pound. 



Water, about 50 gallons. 



3. KEROSENE EMULSION 



For soft-bodied, sucking insects, as scale, plant-lice, etc. 

 Hard soap (in fine shavings), \ pound. 

 Kerosene, 2 gallons. 



Water (soft or rain water), i gallon. 



Dissolve the shavings of soap in the water while it boils. Remove 

 the water from the fire ; add the kerosene, and churn the mixture by 

 pumping it through a spraying pump until a creamy liquid, without free 

 oil, is formed. This mixture contains 66 per cent of kerosene. Dilute 

 it with from 6 to 10 gallons of water for scale insects, and with 10 to 

 20 gallons for softer insects. 



4. LIME-SULFUR WASH 



For scale insects, applied while there are no leaves on the trees. 

 15 pounds flowers of sulfur. 

 20 pounds of unslaked lime. 

 50 gallons of water. 



(15 pounds of salt is sometimes added.) 



Mix the sulfur with a very small amount of water. Slack the lime in 

 5 to 10 gallons of hot water ; add the sulfur; dilute to 25 gallons ; boil 



