Aveust 30, 1918] 
tion at the meeting in London on July 5: 
—Section A.—Mathematical and Physical Sci- 
ence: Seismological investigations, £100; dis- 
eussion of geophysical subjects, £10. B.— 
Chemistry: Colloid chemistry and its indus- 
trial applications, £5; non-aromatie diazonium 
salts, £7 7s. 8d. D.—Zoology: Inheritance in 
silkworms, £17. F'.—Economic Science and 
Statistics: Women in industry, £10; effects of 
the war on credit, ete., £10. H.—Anthropol- 
ogy: Paleolithic site in Jersey, £5; archeolog- 
ical investigations in Malta, £10; distribution 
of bronze-age implements, £1; age of stone cir- 
eles, £15; anthropological photographs, £1. I. 
—Physiology: The ductless glands, £9. K.— 
Botany: Heredity, £15; Australian Cycadacee, 
#£17s.; Australian fossil plants, £15. D.—Edu- 
cational Science: The “ free-place” system, £5. 
UNIVERSITY AND EDUCATIONAL 
NEWS 
Tr is officially announced that Yale Univer- 
sity will receive, as residuary legatee of the 
late John W. Sterling, about fifteen million 
dollars, which will nearly double the endow- 
ment of the university. 
A speciAL three months’ course at the New 
York University and Bellevue Hospital Med- 
ical College has been arranged for those who 
wish to qualify as laboratory assistants in 
bacteriological work for immediate service in 
the camps and hospitals. The course is ar- 
ranged by Dr. William H. Park, director of the 
laboratories of the New York Health Depart- 
ment, and Dr. Anna M. Williams, assistant 
director. It will open September 4. 
Tue College of Physicians and Surgeons of 
San Francisco has discontinued the teaching 
of medicine, but will retain a nominal exist- 
ence for the next three years so as to grant 
diplomas to such students as shall complete 
their work satisfactorily in other medical 
schools. 
Proressor M. E. Graser, fellow in mathe- 
matical physies at the University of Chicago, 
has been elected to the professorship of mathe- 
matics in Heidelberg University, Tiffin, Ohio. 
SCIENCE 
221 
Dr. E. V. Cownpry has accepted an appoint- 
ment in the Peking Union Medical College, 
China. 
Dr. J. C. Wuitten, for twenty-four years 
professor of horticulture and head of the de- 
partment of horticulture of the University of 
Missouri, has been appointed chief of the di- 
vision of pomology of the University of Cali- 
fornia. Dr. Whitten arrived in Berkeley the 
middle of August and will begin his work on 
September 1. 
Mr. R. Dovetas Laurir, who has been chief 
demonstrator and assistant lecturer in zoology 
and lecturer in embryology in the University 
of Liverpool for some years, has been appointed 
head of the department of zoology in the Uni- 
versity College of Wales, Aberystwyth. 
DISCUSSION AND CORRESPONDENCE 
HAND-MADE LANTERN SLIDES 
As well expressed by Dr. Gray in Science, 
July 12, 1918, p. 43, it is of advantage and 
often of the greatest convenience to be able 
to prepare quickly for projection a series of 
lantern slides showing diagrams, tabulated 
data, ete. Dr. Gray suggests the use of cellu- 
loid instead of gelatin sheets for this. Both 
the gelatin and the celluloid sheets must be 
supported by glass plates to hold them flat. 
Celluloid and gelatin receive the pen wall, 
and are far less expensive than regular photo- 
graphic lantern slides. 
It was found by the present writer that for 
all the purposes of simple diagrams, tables, etc., 
a still simpler method answers admirably. 
Advantage was taken of the device employed 
by the lantern-slide artists who made by hand 
all the lantern slides before photographic ones 
were invented (1850). The device consists 
of varnishing the well-cleaned glass with a 
very thin solution of some hard varnish. 
When the varnish is dry the pen or brush can 
be used upon the varnished surface with the 
same ease as upon good paper. India ink 
gives the sharpest images and a fine pen is to 
be used for the writing or drawing. 
In preparing the slides the glass is held 
by the edges between the thumb and fingers 
