16 FARMERS' BULLETIN 862. 



orchards. Eradication of this insect on boxes is secured by fumi- 

 gation in a gas-tight room with hydrocyanic-acid gas at the rate 

 of 1 ounce of sodium cyanid to each 100 cubic feet of space, or with 

 sulphur at the same strength. 



Dipping picking sacks, gloves, and jumpers in gasoline for five 

 minutes will destroy all insects and eggs. As the gasoline evapo- 

 rates in a few minutes, the cloth or leather will be ready for use 

 again before the next orchard is reached. 



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