OF WASHINGTON. 109 



of the Proceedings on hand and on the number of exchanges 

 and authors' extras. The Hsting had been almost completed, 

 and the separates were listed on cards so that it would be easy 

 to arrange them for printing. It was then voted that a list 

 of separates and exchanges be printed with the prices attached. 



The President appointed Messrs. Currie, Banks, and San- 

 ders as a committee of publication for Volume IX of the 

 Proceedings. 



Messrs. S. W. Foster, E. L. Jenne, and C. H. Popenoe — all 

 of the Bureau of Entomology, U. S. Department of Agricul- 

 ture — were elected active members of the Society. 



It was voted that a complete set of the Proceedings be pre- 

 sented to the Newark Entomological Society in view of the 

 fact that the entire library of that society had been destroyed 

 by fire. 



Mr. Mel. T. Cook, being called on by those present, gave 

 some notes on his work on galls. He stated that the literature 

 upon the subject is very scattered and that the great majority 

 of workers have been interested in the insects rather than in 

 the galls ; this made the work very difficult. Interesting notes 

 are frequently found in the most unexpected places, for ex- 

 ample, as short paragraphs in long papers without anything 

 in the title to indicate their presence. Frequently the data 

 concerning the host plant are incomplete, or open to suspicion 

 as to their correctness. The speaker had devoted much time to 

 getting the literature and these miscellaneous notes together 

 and in shape for a future publication upon insect galls from 

 the standpoint of the botanist. Galls are produced by species 

 in several distinct orders and families of insects, and we have 

 reason to believe that the gall-making habit has arisen inde- 

 pendently in each of these groups. However, the anatomy of 

 the galls presents certain characters common in all galls regard- 

 less of the taxonomic position of the insects. Certain other 

 anatomical characters are so distinct and clearly defined as to 

 be of great value in systematic work. These anatomical charac- 

 ters depend upon the insects rather than upon the host plants. 

 The stimulus which results in gall production is very imper- 

 fectly understood, but the speaker was inclined to believe that 



