SCIENCE—ADVERTISEMENTS 
Rush Medical College 
IN AFFILIATION WITH 
The University of Chicago 
Curriculum.—The fundamental branches (Anatomy, Physiol- 
ogy, pow! 4 ete ) are taught in the Departments of 
Science at the Hull Biological Laboratories, University of 
Chicago. The courses of the three clinical years are given 
in Rush Medical College and in the Presbyterian, the 
Cook County, The Children’s Memorial, the Hospital for 
Destitute Crippled Children, and other hospitals 
Classes Limited. —The number of students admitted to each 
elass is limited. Applications for admission next Autumn 
quarter should be made now, 
Hospital Year —The Fifth Year, consisting of service as an 
interne under supervision in an approved hospital, or of 
advanced work in one of the departments is prerequisite 
for graduation, : 
Summer Quarter.—The college year is divided into four 
uarters, three of which constitute an annual session. 
he summer quarter, in the climate of Chicago is advan- 
us for work. 
Elective System.—A considerable freedom of choice of courses 
and instructors is open to the student. 
Graduate Courses—Advanced and research courses are 
offered in all departments. Students by attending summer 
quarters and prolonging their residence at the University 
of Chicago in advanced work may secure the degree of 
A.M.,S.M., or Ph.D, from the University. i 
Prize Scholarshiv.—Six prize scholarships—three in the first 
two years and three in the last two (clinical) years—are 
awarded to college graduates for theses embodying original 
research. 
The Winter quarter commences January 2, 1918. 
TUITION—$60.00 per quarter, no laboratory fees. 
Complete and detailed information may be secured by addressing 
THE MEDICAL DEAN 
The University of Chicago CHICAGO, ILL. 
Handy 
Resistance Units 
These are furnished in single value blocks, 
ranging from 0.1 ohm to 10,000 ohms. Blocks 
for all values are uniform in size, and can 
readily be arranged in groups to build up any 
desired resistance. Adjustment is made to 
within 1/20 of one per cent. 
We have just issued a new Circular (No. 10), 
describing and listing these units. 
for it. 
Write 
Circular No. ro also describes a new two-value 
Unit, especially designed for teaching purposes, 
to check up students on resistance measurements. 
PYROLECTRIC INSTRUMENT Co. 
Pyrometric and Electrical Precision Instruments 
148 EAST STATE STREET TRENTON, N. J. 
E. F. Northrup, President and Technical Adviser 
Marine Biological Laboratory 
Woods Hole, Mass. 
Facilities for reseach in Zoology, 
Embuyology, Physiology and Bot- 
any. Seventy-six private | abora- 
tories, $100 each for not over three 
months. Thirty tables are avail- 
ablefor beginnersin research who 
desire to work under the direction 
of members of the staff. The fee 
for such a table is $50.00. 
INVESTIGATION 
Entire Year 
Courses of laboratory instruction 
with lectures are offeredin Inverte- 
brate Zooiogy, Embryology, Physi- 
ology and Morphology and Taxo- 
nomy of the Algae. Each course 
requires the full time of the student. 
Fee, $50. Alecture course on the 
Philosophical Aspects of Biolo; 
and Allied Sciences is also offered. 
INSTRUCTION 
During the Summer 
SUPPLY 
DEPARTMENT 
Open the Entire Year 
Animals and plants, preserved, liv- 
ing, andinembryonicstages. Pre- 
served material of all types of 
animals and of Algae, Fungi, Liver- 
worts and Mosses furnished for 
classwork, ot for the museum. Liv- 
ing material furnished in season 
as ordered. Price lists of Zoological 
and Botanical materia ] sent on ap- 
lication. State which is desired. 
or price lists and all information 
regarding material, address 
GEO. M. GRAY, Curator, Woods Hole, Mass. 
The annual announcement will be sent on application to The 
Director, Marine Biological Laboratory, Woods Hole, Mass. 
The Microscope 
12th Edition, Published April 10, 1917 
Re-Written and largely Re-Illustrated 
By SIMON HENRY GAGE of Cornell University 
Postpaid $3.00 | 
COMSTOCK PUBLISHING CO., Ithaca, N. Y. 
a a AOI 
Memoirs of the Wistar Institute of Anatomy and 
Biology. No. 6, 1915 
THE RAT 
Data and Reference Tables. 278 Pages. 89 Tables. 
Bibliography. 
Compiled and Edited by HENRY H. DONALDSON. 
Postpaid, $3.00. 
The Wistar Institute Philadelphia, Pa. 
MARINE BIOLOGICAL LABORATORY 
WOODS HOLE, MASS. 
2) 4 Biological Materlal 
+ Zool . reserved material of all t mals 
pr her: work and for the musecm., sia thest 
. mbryol . 
eluding ‘Acanthion 
some mammals, 
3. Botany. 
Stages of some invertebrates, fishes (in- 
Amia and Lepidosteus), Amphibia, a 
Preserved material of Algae, Fungi, Liver- 
| Worts and Mosses, Price lists furnished on application to 
GEORGE M. GRAY, Curator, Woods Hole, Mass. 
JULIEN’S POWER LATHES 
COMPACT—ACCURATE—DURABLE 
Use of Geologists, Mineralogists, etc., in SLICING 
and POLISHING all hard substances, rock, etc., and 
in preparation of MICROSCOPIC THIN SECTIONS. 
GUSTAVUS D. JULIEN 
3 Webster Terrace NEW ROCHELLE, N. Y. 
