36 



in order that they may lie to the best advantage they should be dried, 

 as in the preparation of botanical specimens, between blotters. If 

 desired, glass slides may be used and mica used for covering. The 

 advantage of mica over glass is evident, as the mica is not subject to 

 breaking as readil}^ as glass and is much lighter. 



The expense for material is l)ut little more than 1 cent per mount, 

 and the mounts cart be made in very short time by anyone neat at 

 pasting, so the cost of the method is certainly within reason. 



The next paper was presented ])y Mr. Felt, and was on the following 

 subject: 



RESULTS OBTAINED WITH CERTAIN INSECTICIDES. 



By E. P. Felt, Alham/ N. Y. 

 [Withdrawn for publication elsewhere.] 



At the conclusion of this paper it was voted to defer discussion until 

 a series of papers of a similar character had been presented. 



The next paper was presented by Mr. Quaintance. 



FURTHER NOTES ON THE LIME, SULPHUR, AND SALT WASH IN 



MARYLAND. 



By A. L. Quaintance, Vollefje Ptirk, Md. 



At the Pittsburg meeting in June last I presented some notes on the 

 use of the lime, sulphur, and salt wash as a treatment for the San Jose 

 scale in Maryland. Further observations have been made on these 

 tests, and it appears desirable to briefly present the results, particu- 

 larly since the conclusions reached in June as to the lack of efficiency 

 of the wash now appear to have been premature. 



Experimei^t I. — Twenty badly infested Japan plum trees were treated 

 at College Park, Md., on March -1. The last examination before the 

 Pittsl)urg meeting was made on June 2, practically three months later. 

 At this time the young live scales were very numerous, crawling 

 around over the limbs and branches, and man^^ had already settled. 

 Live adult females were also very abundant even where the wash was 

 still adhering to the trees. Scraping infested branches with a knife 

 blade flatwise pressed out an abundance of the oily fluid from the 



