SCIENCE-ADVERTISEMENTS 



PLES OF 



STRATIGRAPHY 



BY 

 AMADEUS W. GRABAU. S.M.. S.D. 



PROFESSOR OF PALEONTOLOGY IN 

 COLUMBIA UNIVERSITY 



"Should be on the reference shelf of every col- 

 lege, normal school, and large high school in the 

 United States." — Journal of Geography, Vol. XIII, 

 Jan. 1915. 



8vo, IISO pages, 264 Ulastrationt. Price, $7.S0 



Descriptive Circular Sent upon Request 



k. G. SEILER & CO. 



NEW YORK CITY 



TIME-SAVERS 



For mathematics teachers, students, pro- 

 fessional computers and engineers : — 



Computing Tables and Mathe- 

 matical Formulas — Barker 



T7eU adapted for professional computers 

 and engineers . . . Pocket size, 60 cents 



Tables and Formulas — Revised 



Edition — Longley 



For solving numerical problems in anal- 

 j'tic geometry, calculus, and applied 

 mathematics . . . Pocket size, 50 cents 



Logarithmic Reduction Tables — 



Moore 



Tables covering gravimetric, volumetric, 

 and gas analysis Svo, $1.00 



Ginn and Company 



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The RHIIippine 

 JJournal of Science 



ALVIN J. COS, M.A., Ph.D., General Editor 



Published by the Bureau of Science 



of the Government of the 



Philippine Islands 



A Periodical Devoted to the Scientific and Commercial 

 Interests of the Tropics 



The Journal, dow in ita twelfth volume, \a issued in four 

 sections. Each section consists of six numbers a year,_ in 

 eeparately paged and indexed, and is a complete publication 

 in itself. 



YEARLY SUBSCRIPTION RATES 



Section A. Chemical and Geological Sciences and 



the Industries $2.00 



Section B. Tropical Medici.-e 3.00 



Section C. Botany 2.00 



Section D. General Biology, Ethnology and Anthro- 

 pology 2.00 



The four sections to one subscriber 7.00 



A complete list of the publications of the Philippine Bureau 

 of Science and a sample copy of the PhiUppine Journal of 

 Science will be sent upon request. 



Subscriptions and orders for publications should be sen t to 



THE BUSINESS MANAGER 



Philippine Journal of Science 

 Bureau of Science MANILA, P. I. 



The IVIIoroscope 



12th Edition, Published April 10, 1917 



R.-Written and largely Ro-UIustrated 



By SIMON HENRY CAGE of Cornell Univenity 



Poatpaid $3.00 



COMSTOCK PUBLISHING CO., Ithaca, N. Y. 



The Olen Richards Research Prize 



The Naples Table Association for Promoting 

 Laboratory Research by Women announces the offer 

 af a research prize of §1000.00 for the best thrais 

 written by an American woman embodying new ob- 

 servations and new oonolnaions based on independent 

 laboratory research in Biology (including Psy- 

 chology), Chemistry or Physics. Papers published 

 before 1916 will not be considered and theses pre- 

 sented for a Ph.D. degree are not eligible. Theses 

 offered in competition must be in the hands of the 

 Chairman of the Committee on the Prize before 

 February 25, 1918. Application blanks may be ob- 

 tained from the secretary, Mrs. Ada Wing Mead, 

 823 Wayland Avenue, Providence, R. I. 



Biology Professor Wanted 



At Mt. Allison University for year beginning Sept. 

 22d, 1917. Apply giving particulars and testi- 

 monials to 



B. C. BRODEN, President 

 Sackville, N. B. CANADA 



