288 ENTOMOLOGICAL NEWS. [June, 'l2 



OBITURY. 



Dr. Nettie M. Stevens. 



In the death of Dr. N. M. Stevens, which occurred on May 

 4, 1912, in the Johns Hopkins Hospital, Baltimore, American 

 zoology loses a distinguished, patient and industrious investi- 

 gator. Her researches for the most part lay outside the field 

 of entomology, but, like the late Professor Montgomery's as 

 pointed out in our May number, her cytological material was 

 often drawn from insects. Like Professor Montgomery also, 

 she was among the first in the study of the chromosomes of 

 the germ cells and their relation to differences in sex. In at 

 least ten papers, between 1905 and 1911, she dealt with these 

 structures in Termites, Orthoptera, Coleoptera, Aphids and 

 Diptera. 



Miss Stevens was born at Cavendish, Vermont, July 7, 1861, 

 received her early education at Westford and Westfield, Mas- 

 sachusetts, and subsequently taught school in that part of the 

 State. Removing to California, she entered Leland Stanford 

 Junior University, where she obtained the bachelor's and mas- 

 ter's degrees in 1899 and iqoo. Graduate work in zoological 

 subjects at Stanford, Bryn Mawr, Wood's Hole and Wurz- 

 burg followed, and in 1903 /she received the Ph. D. from Bryn 

 Mawr, where she has since served first as Reader (1904-05) 

 and then as Associate in Experimental Morphology (1905 on). 



Undaunted by the presence of one of the most dreaded of 

 human diseases, she directed the work of her students from 

 the Hospital until within a few days of the end ; unyielding 

 as long as consciousness remained, she confidently looked for- 

 ward to renewing her researches. P. P. C. 



Shigeru Kuwayama. 



In reply to a request for a copy of "Die Psylliden Japans I 

 and II" by Shigeru Kuwayama, I have received word from his 

 father (who sent the papers) at Sapporo that "my eldest son 

 Shigeru Kuwayama, who was a Bachelor of Agriculture here, 

 passed away calmly this year on February I7th." 



May 8, 1912. EDITH M. PATCH. 



