64 JOUKNAL OF ECONOMIC ENTOMOLOGY [Vol. 3 



tinued rain storms may so reduce the amount of free sulfur on the 

 bark as to render the treatment harmless to the insects. 



Further work on the subject will be done in the season of 1910. 



From the foregoing two interesting points are apparent : 



(a) Eggs of the oyster shell scale are unaffected by the applica- 

 tion of lime-sulfur solutions made previous to the opening of the 

 buds. On trees so sprayed the young were killed very soon after 

 hatching. The intervention of rain storms before the hatching of the 

 eggs may more or less affect the value of the treatment, 



(b) It is indicated that emulsions of linseed oil and cottonseed 

 oil may be useful for the treatment of this insect while in the egg 

 stage and during the hatching period. 



Mr. Braucher: Some years ago I was engaged in spraying work 

 in Lincoln Park, Chicago, and secured practically the same results 

 that Professor Cooley has indicated. The eggs of the insect in many 

 cases "appear to be perfectly normal up to the time of hatching, but 

 in most cases the young failed to establish themselves, and later 

 in the season I was unable to find living insects on the trees. 



The home-boiled lime-sulfur wash was used, being applied from 

 November until early spring, and gave satisfactory results. 



Mr. Surface: I have found several cases in Pennsylvania where 

 this insect has been practically exterminated by using the lime-sulfur 

 wash. This was used in the orchard of Mr. Robert Beaston, at Tyrone, 

 Pa., with excellent results. 



[The Proceedings will be continued in the next issue. — Ed.] 



AMERICAN ASSOCIATION OF ECONOMIC ENTOMOLOGISTS 



In accordance with the provisions of the constitution, the President has 

 appointed the following Committee on Membership for the year 1910: Prof. 

 H. E. Summers, Prof. A. L. Quaintance and Dr. S. A. Forbes. 



E. D. Sanderson, President. 



A. F. Burgess, Secretary; 



