SCIENTIPIC BOOKS 



INTERRELATIONS OF THE FOSSIL FUELS 



By JOHN J. STEVENSON 



From Proceedings of American Phil. Society. Bound, with 

 contents and index, VIII and 458 pages. Price, $3.75. 



G. E. Stechert & Co., 1 5 1 W. 25th St., 

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AMERICAN HONEY PLANTS 



By FRANK C. PELLETT. 



The first book in the English language dealing with the 

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 with more than 150 photographs from life. Three hundred large 

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American Bee Journal, Hamilton, 111. 

 STUDIES IN FRENCH FORESTRY 



By THEODORE S. WOOLSEY, JR. 

 With Two Important Chapters by William B. Greeley. 

 An authoritative and interesting account of French practices 

 and policies as applied to forestry, which have been remarkably 

 successful. 550 pages. Price, §6.00. 



John Wiley & Sons, Inc., New York 

 PRINCIPLES OF HUMAN GEOGRAPHY 



By ELLSWORTH HUNTINGTON 

 and the late SUMNER W. CUSHING 

 An interesting, practical and truly educational geography. The 

 problems given call for an unusual amount of thought and 

 activity. 430 pages. Price, $3.50. 



John Wiley & Sons, Inc., New York. 



INBREEDING AND OUTBREEDING 



By EDWARD M. EAST, PH.D., Harvard University, and DON- 



ALD F. JONES, Sc. D., Connecticut Agricultural Station. 

 Designed especially for the biologist, this work should be read 

 by those who are interested in the far-reaching and funda- 

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 that have been done in this subject. 285 pages. 



J. B. Lippincott Company, Philadelphia 



HUMAN PSYCHOLOGY 



By HOWARD C. WARREN, Professor of Psychology, 

 Princeton University. 

 A text-book based on the theory that mental life comprises 

 the events which occur in the active give-and-take relations be- 

 tween organisms and environment. 460 pages. 



The Houghton Mifflin Company, Boston 

 APPLIED ECONOMIC BOTANY 



By MELVILLE THURSTON COOK, Ph. D., Rutgers College, 

 New Brunswick, N. J. 

 The author has endeavored to make this work so flexible that 

 it may be used in schools regardless to the amount of time 

 devoted to the subject, or the available laboratory space and 

 equipment. 261 pages. 



J. B. Lippincott Company, Philadelphia 



Advertisements of new books of interest to 

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 this page for $1.00. 



Georgetown University 



SCHOOL OF MEDICINE AND 

 DENTAL DEPARTMENT 



The Sixty-fourth Session began in September and con- 

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GEORGE M. KOBER, M. D. 



Dean School of Medicine, 1819 Q Street 



SHIRLEY W. BOWLES, D.D.S. 



Dean Dental Department, 1616 Eye Street, N. W. 



Washington, D. C. 



LEARN TO BE A WATCHMAKER 

 Bradley Polytechnic Institute 



Horological Department PEORIA, ILL. 



Formerly Parsons Horological Inst. 

 Largest and Best Watch School in America 



We teach Watch Work, 

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This entire buildia* 

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I lie Microscope 



12th Edition, Publbhed April 10, 1917 



Re-Written and largely Re-Illustrated 



By SIMON HENRY GAGE ot Cornell University 



POSTPAID $3.00 



COMSTOCK PUBLISHING CO., Ithaca, N. Y. 



NOW READY 



THE PHYSICS OF THE AIR 



By WILLIAM J. HUMPHREYS, Ph.D. 



Professor of Meteorological Physics, U. S. Weather Bureau 



A rational and deductive treatise on the physics of 

 the atmosphere. Of great value to meteorologists, 

 physicists and the aviator. 



650 pages, many illustrations, 8vo. Price $5.00.. 

 Address orders and inquiries to 



THE FRANKLIN INSTITUTE 



PHILADELPHIA, U. S. A. 



BIOLOGICAL MATERIAL 



FOR EXHIBITION AND DISSECTION 



H. EDW. HUBERT 



Send for price lists of zoological and botanical materiaV 



3615 Melpomene St New Orleans, La. 



