616 
Dr. D. T. MacDoucat gave a lecture on the 
“ Physical and Biological Aspects of American 
Deserts ” to the members of the Colonial Insti- 
tute, Geographical Society and Natural Sci- 
ence Society of Hamburg on March 23. 
Dr. R. M. Pearce, professor of research 
medicine at the University of Pennsylvania, 
will deliver at the Syracuse Medical School 
the annual Alpha Omega Alpha address of the 
Gamma of New York Chapter. The title of 
the address is “ Medical Education.” Dr. 
Pearce will be the guest of honor of members 
of the fraternity at their annual dinner at 
the Onondaga. 
Dr. W. A. Evans, sanitary expert of the 
Chicago Tribune, has given three lectures at 
the University of Illinois on health topics. 
Dr. Evans aided in the establishment several 
months ago of the Champaign County Anti- 
tuberculosis Health League which is now 
making a sanitary survey of the county and 
has an employed inspector, Dr. Carrie Noble 
White. 
Proressor IrvinG FisHer, of Yale Univer- 
sity, lectured before the undergraduates at 
Oberlin College on April 4 on “ Some Aspects 
of the Modern Public Health Movement.” 
Dr. Fisher explained the significance of the 
International Health Exposition at Dresden, 
and devoted a large part of his address to 
emphasizing the value of eugenics. He called 
particular attention to the scientific methods 
employed in Germany and in Sweden to guard 
against the spread of tuberculosis and typhoid 
fever, and gave a brief analysis of the statis- 
tical treatment of the health problem in the 
United States, urging the great need for more 
thorough registration of births, deaths and the 
general care of vital statistics by scientific 
methods. 
Tue Academy of Natural Sciences of Phila- 
delphia, at its meeting of April 2, adopted the 
following minute: 
The Academy of Natural Sciences of Philadel- 
phia has heard with deep regret of the death of 
Professor Thomas Harrison Montgomery, Jr., on 
March 19, 1912. Professor Montgomery was a 
grandson of Samuel George Morton, president of 
this academy from 1849 to 1851, widely known for 
SCIENCE 
[N.S. Vou. XXXV. No. 903 
his collection and study of human craniology. To 
that ancestor we may trace Montgomery’s taste 
for natural history which led him to study zoology 
in the University of Berlin (where he received the 
Ph.D. in 1894) and to fill positions of instruction 
and research in the Wagner Institute, the Wistar 
Institute, the Woods Hole Marine Biological 
Laboratory and the Universities of Texas and of 
Pennsylvania. He was elected a member of the 
academy February 23, 1897. He served on the 
Committee on Instruction and Lectures in 1903 
and on the Committee on Accounts from 1909. 
He was the first to respond to the invitation to 
contribute to the Centenary Memorial Volume and 
his memoir on Human Spermatogenesis was the 
last paper which he completed, although he did not 
live to read it at the anniversary meeting. Barely 
more than thirty-nine years of age when he died, 
he would have been justified in a feeling of pride 
in what he had accomplished. He had made fruit- 
ful suggestions on the mechanism of inheritance, 
based on his studies of minute details of the 
structure of the germ cells; he had investigated 
the anatomy of the unsegmented worms, rotifers 
and spiders; he had made known many interesting 
habits of spiders and of birds; his breadth of 
outlook and of zoological knowledge was displayed 
in his book on the ‘‘ Analysis of Racial Descent 
in Animals.’?. From all that he had done we 
tightly expected much to come from his further 
researches and our sorrow at his departure is made 
keener by his fulness of promise. 
Mr. Gustav PoLLak is preparing a biog- 
raphy of Michael Heilprin and his sons, and 
will be glad to receive letters by the late Pro- 
fessor Angelo Heilprin. They may be sent to 
21 West Eighty-fifth Street, New York. 
Dr. Perry L. Hopss, professor of chemistry 
at Western Reserve University, died on. April 
6, aged fifty-one years. 
Tue death is announced of Dr. P. N. Leb- 
edew, professor of physics at Moscow, known 
for his work on the pressure of light. 
Tue eighteenth meeting of the Association 
of Teachers of Mathematics in the Middle 
States and Maryland, was held at Syracuse 
University on April 6, under the presidency 
of Professor I. J. Schwatt, of the University 
of Pennsylvania. 
Tue eleventh annual meeting of the North 
Carolina Academy of Science will be held at 
