80 THE MONTHLY BULLETIN, 



A JAPANESE FORMULA FOR DESTROYING THE 



WOOLLY APHIS. 



Mr. T. Machida^ of Japan has recently found a very satisfactory 

 wash formula which has been found to be of much value in the control 

 of the woolly apple aphis. His recommendations for the various ingre- 

 dients to be used are as follows : 



Rape-seed oil ^\ P^^^^ 



Sulphur if o^i'^^^s 



Turpentine -- '^ ounces 



The rape-seed oil should be boiled alone for a very short time followed 

 by adding the turpentine slowly, stirring continually until they are 

 thoroughly mixed. Stir in the required amount of well crushed sul- 

 phur. Use a strong fire and allow to cool, when the mixture assumes a 

 darkish color. Paint the attacked parts of fruit trees. This wash can 

 also be recommended for use in the control of other aphids and the 

 destruction of their eggs.— S. Nakayama, Stanford University. 



iRev. The Insect World (Gifu, Japan) Vol. XVII. No. 2, pp. 33-36 (Feb. 1913). 



