NovEMBER 29, 1918] 
Education and special training is establishing 
in the department of chemical engineering at 
Columbia University in the City of New York 
an Ordnance Department School of Explosives 
Manufacture. The object of this school is 
to give men with proper preliminary qualifi- 
cations the training necessary to fit them for 
use by the Ordnance Department as com- 
missioned officers in the supervision of factory 
operation and inspection of the finished prod- 
ucts in plants manufacturing explosives and 
raw materials for explosives. The school will 
be only for enlisted men in the military serv- 
ice who are detailed for instruction in the 
school by the Ordnance Department. 
UNIVERSITY AND EDUCATIONAL 
NEWS 
Tue will of the late Dr. John C. McCle- 
nathan, Connellsville, the value of whose es- 
tate is approximately $160,000, leaves the bulk, 
after the death of his widow, to Washington 
and Jefferson Colleges to erect a building to 
be known as the McClenathan Hall of Science. 
Tue Loyola University School of Medicine 
has recently been reorganized. The buildings 
and equipment of the Chicago College of 
Medicine and Surgery were purchased in Sep- 
tember, 1917, making an important addition to 
the resources of the school. In the depart- 
ment of anatomy Dr. R. M. Strong, professor 
of anatomy at Vanderbilt University Medical 
School has been appointed professor and head. 
Dr. Thesle T. Job has been made assistant 
professor of anatomy. 
At Cornell University Mrs. Dorothy Russell 
Naylor, 718, has been appointed instructor in 
mathematics in place of Perey A. Fraleigh, 
17, who has received leave of absence for Na- 
tional service. Frances G. Wick, ’05, has been 
appointed acting assistant professor of physics 
for the current year. 
Dr. S. D. Zexpry, of the College of Hawaii, 
has been appointed professor of mathematics 
in Olivet College. 
Dr. Horace Leonarp Howes has been ap- 
pointed professor of physics at the New Hamp- 
SCIENCE 
545 
shire College to succeed Professor V. A. Suy- 
dam, resigned. He is a graduate of Syracuse 
University in the class of 1905 and took his 
doctor’s degree at Cornell in 1915. While at 
Cornell he was instructor in physics and re- 
search assistant to Professors E. L. Nichols 
and Ernest Merritt. 
DISCUSSION AND CORRESPONDENCE 
FOOD OF AQUATIC HEMIPTERA 
THE reading of an interesting article in this 
JourNAL by Hungerford,’ that discussed the 
food supply of certain aquatic bugs, caused me 
to look up some of my own notes on the food of 
water-striders and other aquatic Hemiptera. 
These notes were recorded mainly from obser- 
vations made near Urbana, IIl., during the 
years 1911-13 inclusive. 
Hungerford? states: “In the literature deal- 
ing with aquatic Hemiptera, we are informed 
that without exception they are predatory: 
those which dwell upon the surface capturing 
such flies and other terrestrial insects as may 
chance to fall into the water, and those that pass 
their lives beneath the surface preying upon 
aquatic insects and similar organisms.” My 
own conclusions, regarding the food of water 
bugs, formed from reading the literature on 
aquatic Hemiptera, if expressed briefly, would 
be very similar to those just quoted, with some 
exceptions. 
At the present, I recall three writers who 
mention that aquatic bugs use other food be- 
sides insects. Miall? makes the following 
statement: “To this suborder [Heteroptera] 
belong a number of very common aquatic in- 
sects. They are all predatory, feeding upon 
small insects or crustaceans.” This writer* 
points out that, “ Nepa feeds mostly on small 
insects, Ranatra, upon the water-flea (Daph- 
nia) and other aquatic animals.” The follow- 
ing is another quotation from Miall:* The in- 
1‘‘Notes Concerning the Food Supply of Some 
Water Bugs,’’ Sorence, N. S., Vol. XLV., pp. 336- 
337, 1917. 
2 Ibid., p. 336. 
3‘‘The Natural History of Aquatic Insects,’’ 
London, 1903, p. 346. 
4 Ibid., p. 354. 
