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Back MatterSource: The Scientific Monthly, Vol. 25, No. 3 (Sep., 1927), pp. ix-xviPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/7874 .

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THE SCIENTIFIC MONTHLY-ADVERTISEMENTS ix

Marine Biological Laboratory Woods Hole, Mass.

Facilities for research in Zool- INVESTIGATIONOgY Embryology, Physiology, A T L A S T ! and Botany. Fifty-two private

Entire Year laboratories $100 each and ninety-four private labora-

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story staff. The fee for such a table is $50.00. Courses of laboratory' instruc-

scie <z >, X * _ ; nces tion with lectures are offered sciences tthat is INSTRUCTION in Invertebrate Zoology, Pro- tozoology, Embryology, Phys-

June 28 to August iology, and Morphology and

stim ulating, brilliant 8, 1927 Taxonomy of the algae. Each course requires the full time of the student. Fee, $75.00.

and true-- Y BIOLOGICAL SUPPLIES SUPPLY For the classroom, museum or

DEPARTMENT collector. E First class preparations.

Open the Entre Send for new (1926) Catalogue T E Year No. 1. Zoological and Em- bryological material, Life Histories and Habitat SEVEN SEALS ~~~~~~~~~~~~~Groups. Catalogue No. 2, Botanical EVEN EALS ~~~~~~~~~~~~~~~~material.

Catalogue No. 8, Microscopic slides.

Address all correspondence vOrF w C IEN C - 1 M , L . regarding material and Supply Department GEO. M. GRAY,

Curator, Woods Hole, Mass.

By Joseph Mayer The annual annouincement will be sent on application to The Director, Marine Biolog- ical Laboratory, Woods Hole, Mass.

Dr. Mayer has accomplished with amazing success the difficult task of outlining in a single book the Collecting Cans for Naturalists seven great natural sciences: Mathematics, Astronomy, Physics, Chemistry, Biology, Geology, and l_ Psychology. He traces their de- velopment from Thales to Ein- stein, and presents a fascinating story of the growth of human ideas through the centuries.

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x THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

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THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xi

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xii THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

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THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xiii

( e r v T c e

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xiv THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

CDE Research Microscope Optical Perfection pius Mechanical Precision The advantages of both binocular and monocular vision are assets of B & L Re-

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Catalog sent upon request

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THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xv

And in .one of the-,, BO TA N Y - - -that have been heard herei9

but hel JHE accompanying clip- buove

_ .\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~et

ping from the London extau

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xvi THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

Economic T Z Efficient

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|The Scientific Monthly| Entered as second-class matter October 1, 1915, at the post office at Lancaster, Pennsylvania,

under the Act of March 8, 1879

THE SCIENTIFIC MONTHLY is conducted on the editorial lines followed by THE POP- ULAR SCIENCE MONTHLY since Igoo. It publishes as the THE POPULAR SCIENCE MONTHLY published, articles appealing especially to educated readers as opposed to purely popular matter intended for the public generally, and for such a journal THE SCIENTIFIC MONTHLY appears to be the more fitting name. The editorial management, publication department and typographical form are the same as have characterized THE POPULAR SCIENCE MONTELY during the past fifteen years, and have made it an important agency for the advance- menI and diffusion of science.

CONTENTS OF THE JULY NUMBER CONTENTS OF THE AUGUST NUMBER

The Origin and Evolution of Life upon the Earth. Dr. Changing Conditions in the Kentucky Mountains. Henry Fairfield Osborn. B. H. Schockel.

The Animal-breeding Industry. Dr. Raymond Pearl. Sir Ronald Ross and the Pre'vention of Malarial The Reversus-a Fishing Tale of Christopher Columbus. Fever. Major General William C. Gorgas and

Dr. C. R. Eastman. Dr. Fielding H. Garrison. The Variable Desert. Dr. J. Arthur Harris. War Selection In the Philippines. Dr. Edwin The Influence of Greece on Science and Medicine. Pro- Bingham Copeland.

fessor D. Fraser Harris. Essentials in the Study of Labor Organizations. Is a Balance of Trade in favor of Exports Favorable? Professor Frank T. Carlton.

Charles A. Gilchrist. The Environment of the Ape Man. Professor Ed. Fire Insurance and Protection from Fire. Dr. Maynard ward W. Berry.

M. Metcalf. The Origin and Evolution of Life upon the Earth. The Black Death and its Lessons for To-day. Professor Dr. Henry Fairfield Osborn.

T. D. A. Cockerell. TheROle of Service in Evolution. Professor Hervey Resources in Men. Brigadier General H. M1. Chittenden. Woodburn Shimer. Who Pays for the Panama Canal ? C. E. Grunsky. The Relation of Heredity to Cancer in Man and The Progress of Science: Animals. Dr. C. C. Little.

Engineering Experiment Stations in the Land Grant The Progress of Science: Colleges; Resolutions of the Committee of One Hun- The Epidemic of Infantile Paralysis; Cinchona dred on Scientifio Research; National Productivity in as a Tropical Station for American Botanists; Science; Scientifio Items. Irrigation In British Columbia; Scientific Items.

Ths MONTHLY will be sent to new subscribers for six months for One Dollar.

SUBSCRIPTION ORDER To TIE SCIEXCE PRESS,

Pzublishers of THE SCIENTIFIC M?hONTHLY, Subh-Station 84, JNVew York City.

Please find enclosed check or money order for three dollars, sutbscripi5ion to THE SCIENTIFIC .OJIOXTHLT for one year, bedinnin, Septernber, 1916.

Name-

.4ddress - ----------------------------------------

Single Number 30 Cents Yearly Subscription, $3.00 THEE SQIEN PRE SS

Lancaster, Pa. Garrison, N. Y. Sub-Station 84; New York



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