SCIENCE— ADVERTISEMENTS 



CORNELL UNIVERSITY 

 MEDICAL COLLEGE 



First Avenue and Twenty-eighth Street 

 NEW YORK CITY 



The first year of the course is also 

 offered at Ithaca, N. Y., subsequent 

 years at New York City only. 



For Information Address 

 THE SECRETARY 



Northwestern University 



MEDICAL SCHOOL 



Situated in Chicago m close proximity to im- 

 portant Hospitals with an abundance of clinical 



material. 



■ADMISSION REQUiREMENTS— Two years of Coilece credit la- 

 eluding a piatiafactory coursfl Id Physics, Chemistry, Hiolo^ 

 oi Zoology, and Freocli of GermsD. 



COURSK OF STUDY— leadine to the degree of Doctor of Madl- 



cine — Four years Id the Medical School ctnd a fifth year 

 either as Interne in au approved hoepitel or devoted to le- 

 search iu sonie branch of Medical Science. ' 



GRADUATE INSTRUCTION— in couraes leading to the degree •£ 



Master of Arte or Doctor of Philosophy. 



RESEARCH FOUNDATION -The James A. Patten Eudowmeai 

 'or Research nilordi unusual opportunities for advanoad 

 atudentfl of Medical Science to puraue special investigetJoEw. 



RESEARCH FELLOWSHIPS— Four fellowships of the value of 

 $500 each are av/arded annually to promote scholariy ro- 

 •esrch. 



Tuition fees of the first and second years, $190.00 a year. 

 The third and fourth years, $209.00 a year. 



For information address 



C. W. PATTERSON, Registrar 



2421 South Dearborn Street, Chicago, Illinois 



THELCO CONSTANT TEMPERATURE 



DRYING OVENS 



The Microscope 



By SIMON H. GAGE of Cornell UmveroJly 



1 3 th Edition, Published December, 1920 



la this editiou, special emphasis is put upon the Dark-Field 

 hlloroiicope. POSTPAID S3.00. 



COMSTOCK PUBLISHING CO., Ithaca, N. Y. 



WOODS HOLE, MASS. 



LARGE DOUBLE WALL THELCO OVEN 



In the laboratory as well as in the mill we must con- 

 stantly apply economics. If for the work in hand a less 

 expensive article will do, use it by all means. Among our 

 products you will find a wide variety suitable for the 

 different conditions at hand. 



Manufactured by 

 The Thermo Electric Instrument Co, 



8 Johnson St. Newark, N. J. 



1. ZOOLOGY. Preserved mate- 

 rial of all types of animals for class 

 .' ork and for the museum. 



2. EMBRYOLOGY. Stages of 

 >m<i invertebrates, fishes (includ- 

 ing Acantiiias, Amia and Lepidos- 

 ttis). Amphibia, reptiles aad some 

 mamimals. 



3. BOTANY. Preserved mate- 

 rial of Algae, Fiuigi, LiverwortSj 

 Mosses, Ferns and Seed Plants. 



4. MICROSCOPE SLIDES in Bacteriology, 

 Botany and Zoology. 



5. LIFE HISTORIES, Germination Studies, 



and Natural History Groups. 



Catalogues furnished on application ta 



GEORGE M. GRAY, Curator 



WOODS HOLE, MASSACHUSETTS 



