18 DRAGON FLIES VS. MOSQUITOES. 



received may be published wholly or in part, at the dis- 

 cretion of the judges, and full credit will in all cases be 

 given to each observer. The essays should be forwarded 

 by December 1st, 1889, to Mr. J. H. Winser, at the 

 American Museum of Natural History, Seventy-seventh 

 Street and Eighth Avenue, New York, to whom all com- 

 munications should be addressed. 



"ROBERT H. LAMBORN, 



" 32 Nassau Street, N. Y. 

 "July 15th, 1889." 



The short ]ieriod given to work out and answer the 

 complicated questions set forth by the circular was evident 

 to every one, and to no one more clearly than to its 

 author. But that the time accorded was well used by 

 those entering upon the investigation, every one reading 

 the essays appended will be convinced, and in awarding 

 the prizes the distinguished judges placed on record their 

 appreciation of the value of the results secured and meth- 

 ods pursued. They say : — 



"Under the circumstances, and after careful consider- 

 'dtion, your committee have awarded the first prize to Mrs. 

 Carrie B. Aaron, 1832 Pine Street, Philadelphia, and 

 decided that the second and third prizes should be divided 

 equally between Mr. Archibald C. Weeks, 120 Broadway, 

 New York, and Mr. "William Beutenmiiller, 182 East 

 Seventy -sixth Street, New York. 



" The decision to divide the second and third prizes was 

 determined by the fact that while Mr. Beutenmiiller's 

 paper exhibited a vast amount of painstaking study and 

 laborious research of the authorities bearing npon the sub- 

 ject, that of Mr. Weeks conformed more closely to the 



