288 ENTOMOLOGICAL NEWS. [June, *12 
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 1809 and 1900. 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. Pp. Pe 
Shigeru Kuwayama. 
In reply to a request for a copy of “Die Psylliden Japans | 
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 17th.” 
May 8, 1912. EpitH M, Patcu. 
