+ All Categories
Home > Documents > Front Matter

Front Matter

Date post: 05-Jan-2017
Category:
Upload: duongque
View: 212 times
Download: 0 times
Share this document with a friend
11
Front Matter Source: The Scientific Monthly, Vol. 26, No. 1 (Jan., 1928), pp. i-viii Published by: American Association for the Advancement of Science Stable URL: http://www.jstor.org/stable/7942 . Accessed: 08/05/2014 02:39 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve and extend access to The Scientific Monthly. http://www.jstor.org This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AM All use subject to JSTOR Terms and Conditions
Transcript
Page 1: Front Matter

Front MatterSource: The Scientific Monthly, Vol. 26, No. 1 (Jan., 1928), pp. i-viiiPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/7942 .

Accessed: 08/05/2014 02:39

Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp

.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact [email protected].

.

American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve andextend access to The Scientific Monthly.

http://www.jstor.org

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 2: Front Matter

-THE JANUARY

SCIENTIFIC MONTHLY

EDITED BY J McKEEN CATTELL

IN NIGERIA. PROFESSOR A. S. PEARSE .................................. 5

WILD LIFE IN LOUISIANA. PERCY VIOSCA, JR .19

AGRICULTURAL OBSERVATIONS OF BERNARD; PALISSY, THE HUGUENOT POTTER. GRACE M. ZIEGLER .28

THE LIGHTS AND SHADOWS BACON THREW ON SCIENCE IN THE NOVUM ORGANUM. DR. JONATHAN WRIGHT . 34

WAVE MECHANICS. DR. PAUL -R. HEYL .41

CAN BIRDS HOLD INJURIOUS INSECTS IN CHECK? PROFESSOR E. H. STRICKLAND .48

GRAZING AND FORESTS. DR. CHARLES WENDELL TOWNSEND . 57

AMERICA'S INFLUENCE ON THE DEVELOPMENT OF THE SCIENCES. DR. JOSEPH MAYER ....... .................... 60

THE BACTERIOLOGICAL NVORK OF JOSEPH LISTER. PRO- FESSOR WILLIAM W. FORD ................... . 70

THE RACE FOR SWEETNESS. DR. J. J. WILLAMAN .76

THE PROGRESS OF SCIENCE: The Nashville Meeting of the American Association; Darwin's House at Downe; Professor Fibiger's Work on Experimental Pro- duction of Cancer .87

THE SCIENCE PRESS LANCASTER, PA.-GRAND CENTRAL TERMINAL, N. Y. CITY-GARRISON, N. Y.

Yearly Subscription $5.00 Single Copies 50 cents

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 3: Front Matter

RECENT BOOKS OF SCIENTIFIC INTEREST with comments by the publisher

Across Asia's Snows and Deserts. WILLIAM J. MORDEN. 410 pp. $5.00. G. P. Putnam 's Sons, New York.

The unequalled traverse of Central Asia by the Morden-Clark expedition which covered almost 8,000 miles from the Indian Ocean to the Yellow Sea. It rediscovered the Ovis poli and brought back many specimenis of these rare animals.

Among our Banished Birds. BENTLEY BEETHAM. 226 pp. $4.00. Longmans, Green & Company. New York.

Observations on the author's wanderings in Europe for the purpose of studying numerous colonies of birds in their chosen haunts. Some species described are the Avocet, the Spoonbill, the Godwit and the Stilt. Illustrated with many photographs.

The Nature of Matter, Gravitation and Light. ALBERT P. M.ATHEWS. 218 pp. $3.50. William Wood & Company, New York.

The. object has been to correlate the geometrical, mechanical, electrical, magnetic and psychical aspects of the universe. By reducing the dimensions of physical phenomena to four-dimensional space every- thing is expressed geometrically.

The Human Habitat. ELLSWORTHI HUNTINGTON. 280 pp. $3.00. D. Van Nostrand Company, New York.

The effects of geographical and climatic conditions on the habitats of man, his racial development and civilization are described. In detail the nature of each geographical zone and the characteristics of the people who inhabit it are related.

Dragon Lizards of Komodo. W. DOUGLAS BUR- DEN. 221 pp. $5.00. G. P. Putnam's Sons, New York.

An account of an expedition to the isle of Komodo in the Dutch East Indies in search of gigantic car- nivorous lizards, told in narrative form. Specimens were brought back for the New York Zoological Society.

The Evolution of Penology in Pennsylvania. HARRY E. BARNES. 407 pp. $5.00. Bobbs-Merrill Company, Indianapolis.

By the study of conditions in one state, the prob- lems of penology and its relations to social and eco- nomic questions are disculssed. The work will prove useful to students of sociology and be of interest to the general reader.

American Medicine and the People's Health. HARRY M. MOORE. $5.00. D. Appleton & Com- paniy, New York.

A survey of the organization of medicine in the United States with special reference to the adjust- ment of medical service to social and economic change. It is of special interest to physicians, public- health workers and the intelligent layman.

Charles Darwin. HENSHAW WARD. 449 pp. $5.00. Bobba-Merrill Company, Indianapolis.

A complete and searching study of Darwin's life, his rare personality and his warfare against super- stition in science. The growth of his theory is told as part of the story of his life.

Character and the Conduct of Life. WILLIAM MC- DOUGALL. 390 pp. $3.75. G. P. Putnam 's Sons, New York.

An application of modern psychology to the gui- dance of conduct and character and to self-control and self-development. It aims to help the reader to understand his own nature and to realize his possi- bilities and weaknesses.

Orcharding. VICTOR R. GARDNER, FREDERICK CHARLES BRADFORD, and HENRY D. HOOKER, JR. 305 pp. $3.00. McGraw-Hill Book Company, New York.

A comprehensive treatment of orcharding for be- ginners In the study of fruit growing. A clear pic- ture of the functioning of fruit trees and an outline of the methods and problems of the fruit industry is presented.

Explorations in Hittite Asia Minor. H. H. VAN DER OSTEN. University of Chicago Press, Chicago.

The account of a recent expedition to the prac- tically unexplored region of Anatolia, which resulted in the unearthing of unknown Hittite sites and the significant discovery of a three-story subterranean temple. It is completed by photographic illustrations.

The Scientific Habit of Thought. FREDERICK BARRY. 358 pp. $3.50. Columbia University Press, New York.

This is an informal discussion of the source and character of dependable knowledge, interpreted In a non-technical manner for intelligent people who are interested in the scientific aspect of thought.

The Wealth of the Sea. DONALD K. TRESSLER. 334 pp. $4.00. The Century Company, New York.

This is a comprehensive and interesting descrip- tion of the production, nature and uses of such mari- time treasures as jewels, perfumes, foodstuffs, chem- icals and medicinals, furs, leather, fats, whalebone and many other commodities.

Savage Abyssinia. JAMES E. BAUM. 336 pp. $5.00. J. H. Sears & Company, New York.

The expedition of the Field Museum of Chicago, which brought back many specimens of animals and birds new to science, is described in readable form. It also contains political and economic information.

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 4: Front Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

Sudhoff's First Book in .English

Essays In tlhe Hkistory of Eedicine By KARL SUDHOFF, M.D.

Professor of History of Medicine in the University of Leipzig, i895-1924. Translated by various hands and edited, with foreword and biographical sketch,

13y FIELDING H. GARRISON, M.D. Lieutenant-Colonel, Medical Corps, U. S. Army.

CONTENTS Chapter Page

Foreword. Biographical Sketch ....... ............................ 3

1. Aims and Value of Medical History in the Self-Development and Professional Life of the Physician ...... ............ 45

II. Tendencies and Aspirations in Medical History . ......... 55 III. What is History of Medicine? ........ ....................... 63 IV. Periods in the Development of Medical Science ..... ........ 77 V. Schools of Physicians ........... . ...................... 99

VI. Ways and Means of Research in the History of Hygiene II3 VII. The Hygienic Idea in its Manifestations in World History 123

VIII. H,istory and Epidemiology .'............... 139 IX. Epidemiologic Rules of the Past .45 X. Aims, Means and Methods in Medical Archaeology .57

XI. Medicine in the Stone Age ............ i6i XII. Disease Demonology and Healing Customs of the Teutons .. 171

XIII. Paleopathological Problems and Postulates-Tuberculosis in Prehistoric Times ..1........... I83

XIV. Galen: The New Corpus Medicorum Graecor-um and the Mod- ern Medical World ..... ............ 193

XV. Ancient Italian Representations of Human Viscera as Votiv'e Offerings. ................. 205

XVI. Female Generative Organs as \Totive Offerings ..... ......... 2I3 XVII. Healing Miracles of SS. Cosmos-Damian and Cyrus-John .... 2I9

XVIII. Aims and Methods of Investigation in the History of Medi- aeval Medicine in Western Europe ........ 225

XIX. Salerno: A Mediaeval Health Resort and Medical School on the Tyrrhenian Sea .......... ...................... 229

XX, Hygienic Directions for Travellers During the Middle Ages 251 XXI. A Turning Point in Ho,spital Administration in Mediaeval

Europe.255 Euoe................................................... 5 XXII. The Origin of Syphilis ............ ........................... 259

XXIII. The Literary Remains of Paracelsus ........................ 275 XXIV. Lorenz Fries and the First World-Map Containing the Name

Am erica ......................... 289 XXV. Leonardo da Vinci ..................... 295

XXVI. Medical Data in Greek Papyric Archives ....... ............. 30I XXVII. Medicine and Art .......................................... 305

XXVIII. Painting and the History of Medicine ........ ............... 3I3 XXIX. An Historical Museum of the Healing Art ...... ............ 32I XXX. Julius Leopold Pagel . ...................................... 343

XXXI. Julius Preuss ............................................. 35I XXXII. Max H6fler ............................................. 357

XXXIII. In Memory of Johannes Muller .......... ................... 363 XXXIV. Goethe and Johannes Muller ........... .................... 371 XXXV. Goethe's Phvsician, Privy Councilor Abel .377

XXXVI. Goethe and Maximiliane von La Roche ....... .............. 381 XXXVII. Faust in the Rhineland ................... .................. 391

XXXVIII. Easter Twilight on the Aventine ........................... 395 Crown[Octavo'of 400 pages, illustrated, stamped in gold on extra blue cloth, $5. 00, postpaid

PUBLISHLED BY THE MEDIOAL LWF PRE$S 12 Mt. MorrIs Park West New York, Ho Ym

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 5: Front Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

Vol. XXVI, No. 1 Whole No. 148

The Scientific Monthly An Illustrated Magazine Devoted to the Diffusion of Science

Edited by J. McKEEN CATTELL January, 1928

Published by THE SCIENCE PRESS LANCASTER, PA. GARRISON, N. Y.

NEW YORK, N. Y., Grand Central Terminal Single Number, So Cents Yearly Subscription, $5.oo

COPYRIGHT 1927 BY THE SCIENCE PRE.;S Entered as second-class matter at the post office at Lancaster, Pa., July 18, 1923, under the Act of

March 3, 1879.

Complete Equipment for Explorers, Scientists, Engineers,

Hunters and Travelers We have The only Equipped house

many in the

Expedi- U. S. tions where OutdoorClothing foreveryclimate;Boats;ArmsandAmmunitevery

the Poles item to the may be

Equator obtained

Gurley's Transits, Levels, Current Meters; Paulin Altimeters; Binoculars, Microscopes; Cameras, Motion Picture Outfits; Tents and Camp Requisites; Sleeping Bags; Saddlery; Outdoor Clothing for every climate; Boats; Arms and Ammunition, etc.

We have recently equipped two expeditions for Greenland, one for Persia and others for Venezuela, Peru, Bolivia, and Brazil. Some of these explor- ing parties we equipped with practically everything they needed from engi- neering instruments to rifles, ammunition, and food. Our tents, made of Equatorial Waterproof Cloth, have stood the sun of the tropics and the freezing blasts of the Polar regions.

Let us furnish estimates-write us your wants. Catalogs and Testimonial Letters on request.

AT H ONY FIALA 25 WARREN STREET Ao for the signNEW YORK CITY "Look for the sign of the Polar Bear"

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 6: Front Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS iii

A complete, authoritative book on health maintenance

MEREDITH' S HYGIENE

With Readable Chapters on Anatomy, Physiology and Pathological Conditions.

268 Illustrations. Cloth, $3.50, Postpaid.

By FLORENCE LYNDON MEREDITH, M.D.,

College Physician and Professor of Hygiene at Smith College

This book is written in readable style to meet with the favor of the general public.

Practical advice is given on all health matters, and full, scientific explana- tions are made of the advice given. Dr. Meredith does not say "Do this" and "Do that" but shows why certain procedures tend towards health and others do not.

There are no more practical and thorough discussions for laymen on the subjects of sex hygiene and mental hygiene than are offered here. The language, although technical, is within the scope of the average intelligent adult reader.

The interest is nmaintained and the subject simplified by the handsome illus- trations, many drawn specially for this work. There are 268 figures.

This book should be in the hands of all those trying to keep their health at a high level in order to accomplish their aims. It should also be in the hands of those who have the health of young people in their care.

P. BLAKISTON'S SON & CO. Publishers 1012 Walnut St. Philadelphia

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 7: Front Matter

iv THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

BIO L O GIC A L PAUL CARUS will always be identified with the advaaneenent of science in

S U PPLIES u r r X the fields of religion and philosophy. A small book has just been published SUPPLY For the 1 ,containing selections from his more

DEPARTMENT classroom, museum important work. It is entitled Open the Entire or collector.

Yearorclet.

OP l . First class preparations. THE POINT OF VIEVV

Send for new (1926) Cata- ,4n Antholog_y of Religion and Philosophy from the standpoint

logue No. 1. Zoological and of Monism.

Embryological material, attractively bound in red cloth, with

Life Histories and Habitat gilt stamp and specially boxed for

Groups. l l delivery. Price, $2.50

Catalogue No. 2, Botanical Material The Carus Catalogue No. 3, Microscopic Slides Mathematical Monographs

Address all correspondence regarding material No. i-Calculus of Variations and catalogues to: By Gilbert Ames Bliss

GEO. M. GRAY, Curator Will have a wide range of interest for phvsicists and other sciehtists

THE MARINEK.BIOLOGICAL LABORATORY seeking a clear presentation of this Woods Hole, Mass. subject in a brief space and with a

minimum of technical details.

No. 2-Analytical Functions of a Complex Variable

Book bijndin I I g By David Raymond Curtiss An acquaintance with the elemen-

tary principles of the differential and \7VE SPECIALIZE in the } | |) integral Calculus is assumed but even

binding of Scientific and without it most of the book should be Medical Periodicals. Our bind- intelligible to any reader interested in ings are substantial; our work mathematics. prompt and our prices low. No. 3-Mathematical Statistics Orders for single volumes and By H. L. Rietz

complete libraries receive prompt This monograph may be read by those who have relatively little knowl- and efficient attention. edge of college mathematics.

LAUNDER BOOKBINDERY Nos. 4, 5-In preparat-ion. (Established 1882) Price, $2.00 each

Agents for Bell & Co., London ,57-IS9 East Thirty-Second Street

New York, N. Y. THE OPEN COURT Telephone Caledonia 5873 PUBLISHING COMPANY

33g E. Chicago Ave., Chicago, Illinois 3I-33 E. ioth St., New York

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 8: Front Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS v

A New Journal Volume I Number 1

Physiological Loology

JANUARY, 1928

Protoplasmic Reorganization in Uronychita uncinata sp. nov. during Binary Fission and Regeneration ................................ . .......... C. V. Taylor

Studies of Cell Division. II. The Period of Maximum Susceptibility to Dilute Sea-Water in the Cleavage Cycle of the Fertilized Egg!of Arbacia. E. E. Just

Sulphate Retention in Dogs Following Bilateral Adrenal Extirpation. WV. W. Swingle and W. F. Wenner

An Experimental Study of Ovarian Regeneration in Mice .....H. 0. Haterius

Localization in the Starfish Egg and Fusion of Blastulae from Egg Fragments. D. M. Whitaker

The Respiratory Regulation of the Crayfish, Cambarus immunis (Hagen).

0. M. Helff Effects of Sperm Injections into Female Rabbits ................................. W. T. Pommerenke

Managing Editor: C. M. CHILD Editorial Board: W. C. A LLEE, M. F. GUYER, L. V. HEILBRUNN, E. E. JLTST, F. R. LILLIE,

R. S. LILLIE, W. W. SWINGLE, and C. V. TAYLOR.

Published Quarterly, $6.oo ai Year

THE UNIVERSITY OF CHICAflO PRESS 5811 Ellis Avenue CHICAGO

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 9: Front Matter

vi THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

University of

CALIFORNIA PRESS Richard Joel Russell has recently published two papers dealing with:

THE NORTHWESTERN GREAT BASIN The Land Forms of Landslide Lakes of Surprise Valley Northwestern Great Basin The Quaternary lake in Surprise Val- ley, and the distribution of the land Indications that this whole region is surface types: valley slopes, sand one of recent crustal instability are dunes, detrital apron, grasslands, salt interestingly discussed. flats, hummocks surface-are here de- scribed and outlined on the basis of 24 pages, illustrated, 30 cents field work carried on for several sum- mers in the Warner Range. Catalogue of over 2,000 titles sent

36 paaes, illustrated, 45 cents free on request.

Ready in February! Order now! New eand revised edition ol

J. FRANK DANIEL, THE ELASMOBRANCH FISHES

University of California Press Berkeley, California

GENETICS A Periodical Record of Investigations bearing on Heredity and Variation

Established 1916. Bimonthly. Subscription, $6.00 a year for complete volumes (January to December). Single numbers, $1.25 post free. Back volumes 2-12 only, $7.00 each. Foreign postage: 50 cents. Parts of volumes are to be had only at the single number rate.

ECOLOGY Devoted to All Forms of Life in Relation to Environment

Established 1920. Quarterly. Official Publication of the Ecological Society of America. Subscription, $4.00 a year for complete volumes (January to December). Back volumes 1, 2, and 4-8, $5.00 each. Single numbers, $1.25 post free. Foreign postage: 20 cents. Parts of volumes are to be had only at the single number rate.

BROOKLYN BOTANIC GARDEN MEMOIRS Volume I: 33 contributions by various authors on genetics, pathology, mycology,

physiology, ecology, plant geography, and systematic botany. Price, $3.50 plus postage. Volume II: The vegetation of Long Island. Part I. The vegetation of Montauk, etc.

By Norman Taylor. Published, 1923. 108 pp. Price, $1.00. Volume III: The vegetation of Mt. Desert Island, Maine, and its environment. By

Barrington Moore and Norman Taylor. 151 pages, 27 text figures, vegetation map in colors. Published, June 10, 1927. Price, $1.60.

AMERICAN JOURNAL OF BOTANY Devoted to All Branches of Botanical Science

Established 1914. Monthly, except August and September. Official Publication of the Botanical Society of America. Subscription, $7.00 a year for complete volumes (Jan. and Dec.). Volumes 1-14 complete, $114.00. Single numbers, $1.00 each, post free. Prices of odd volumes on request. Foreign postage: 40 cents. Parts of volumes are to be had only at the single number rate. Address

THE SECRETARY, BROOKLYN BOTANIC GARDEN IooO Washington Ave. Brooklyn, N. Y., U. S. A.

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 10: Front Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS vII

c NNOUNCEMENT of the

FRANCIS BACON AWARD Sponsored by THE FORUM MAGAZINE and SIMoN AND SCHUSTER, INC.

SEVEN THOUSAND FIVE HUNDRED DOLLARS for the outstanding work of non-fiction in the comingyear which, in the famous phrase of Professor James Harvey Robinson, best "carries on the conscious adventure of humanizing knowledge."

(~\NE of the most significant trends in literature, of recent years, has t )Jbeen the ever-widening audience that has arisen for distinguished

and authentic works of science, history, sociology, philosophy, psychology and biography. Curiosity about the world in which we live is, apparently, deeper and keener than ever before. There has been evident an insistent demand from the public for the humani- zation and clarification of specialized knowledge. The Francis Bacon Award has been instituted to foster this clearly valuable tendency. The selection each year of such a work will unquestionably be an event of the first importance in the world of letters. In addition to the money award

of seven thousand five hundred dollars, an emblematic medal will be struck off each year

and presented to the winning author.

THE JURY OF AWARD WILL INCLUDE:

DR. GEORGE3 A. DORSEY DR. WILL DURANT DR. HENRY GODDARD LEACH Author "Why We Behave Like Human Beings" Author of "The Story of Philosophy" Editor of "The Forum"

DR. EDWIN E. SLOSSON DR. HENDRIK WILLEM VAN LOON Author of "Creative Chemistry' Author- of "The Story of Mankind"

COUNT HERMANN KEYSERLING

THE COUNCIL OF CPECIALISTS WILL INCLUDE:

DR. JAMES HENRY BREASTED DR. EDWARD GRANT CONKLIN PROFESSOR JOHN DEWEY of the University of Chicago of Princeton University of Columbia University

DR. VERNON LYMAN KELLOGG FRANK JEWETT MATHER DR. HARLOW SHAPLEY Director National Research Council of Princeton University of Harvard. Univvrsity

For details about the method of procedure to be followed by contestants, address the Afi Francis Bacon Award, care of Simon and Schuster, Inc., Publishers, 37 West 57th Street,

New York City or care of The Forum, 441 Lexington Avenue, New York City.

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions

Page 11: Front Matter

* *-

nll

- l | l | S

S

l |

.

TEE SCIENTIFIC MONTZLY ADVERTISEMENTS

Sensitivity (Per mm. division)

2 micro amperes l microaulpere 0.25 microampere 0.125 rnicroampere 5 mieroamperes 4 rrlicroalllperes 1 microalllpere 0.5 microalllpere 5 rllicroamperes 4 microamperes 1 microalllpere 0.5 microampere 5 micro amperes 4 rrlicroamperes 1 microampere. 0.o tnicroampere

Period Resistance (Ohms) (Sec.) Dampingt Coil§ 2.S 20 12 3 110 20 3 1.800 250 3.5 10,000 1,000 3 50 20 3 50 20 3 950 2:50 3 2,400 1,000 3 50 20 3 0 20 3 9m0 2m0 3 2,400 1,000 3 50 20 8 50 20 3 9r0 2th0 3 2,400 1.000

Li st No. Type Price

82 ).00 825.00 S2 .00 825.00 818 00 818.00 818 00 818 00 S94.00 824.00 824 00 624.00 620 00 620 00 620 on

2310-a 2310-b 2310-c 2310-d 2320-a 2320-b 23f'0 - c 2320-d 2322-a 2322-b 2322-c 2329.-d 2330-a 2330- b 2330- e

4B° Scale 4B° Scale 45° Scale 45° Scale Horis. Scale Horiz. Scale Horiz. Scale H ori ,. Scale Portable Portable Portable Portable Vert. Scale Vert. Scale Vert. Seale Vert. Scale

fM _ nCs W -U s c

Three Rugged Galvanometers v F h

No. 2SS0 Vertical Scale No. 2310 45° Scale No. 2S20 Horisontal Scale rrf IIESE standardized pointer galvanometers all have suspended 1 coils and removable systems in bakelite cases. A11 have metal

scales and non-breakable w,indows. The 45° Scale instrument is the most sensitive of the three. Its

scale has 40 I mm. divisions. The Horizontal Scale galvanometer is the most rugged. It has a

coil clamp which protects against practically any vibration or jolt. It is also made in portable form; see No. 2322 below. Scale has 30 I rnm. divisions.

The Vertical Scale galvanometer has a quick-reading target pointer; it is a favorite for rapid measv}rements. Its scale has 20

4 * . .

I mm. elvlslons. APPROXIMATE1 CHARACTERISTICS

620.00 2330-d Sensitivity at least as high as stated. Other characteristics with;n 20st.

t Exter1lal criti(al danlping resistance. _

§ Including suspensions, <

Send for Catalog RA-o o Go levnatn,oOrmneet,eerrsS 1 | Bridges and Resistances I g d Condensers and WS

LrEDS & NORTHRUP COMPANt s Inductances g .4901 STENTON AVENUEv,PHILADELPHIX | Testing Sets §

| trolling Pyrometers X

| Hump and Homo g

3 g i Electric H eat Treato B=

| l:; | Ii Mc,>^t g > g

n | ttlHctdrolytesland9g

This content downloaded from 169.229.32.137 on Thu, 8 May 2014 02:39:39 AMAll use subject to JSTOR Terms and Conditions


Recommended