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In this well established textbook the author presents the subjectof histology from the embryological point of view. At the sametime due emphasis is given to normal functional changes in thevarious cells and to their activities in the living state. The bookas a whole gives an excellent account of the minute morphology ofthe organs of the body. By J. Lewis Bremer, Harvard Univer-sity Medical School

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Handbook of Microscopic Character-istics of Tissues and OrgansThis book presents fundamental facts in a manner that can beeasily and quickly grasped by the student. It gives tabular sum-maries of various systems in the form of charts. Discussions aresubdivided into general characteristics, unique attributes, types,*origin from the fundamental layers of the embryo and examplesof locations in the body. Spotting characters are italicized.Tissues often confused in identification tests are listed. By K.A. Stiles, Coe College

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Science: published weekly by The Sciencie Press, Lancaster, Pa.Entered as secould-class matter July 18, 1.923, at the Post Office at Lancaster, Pa., under the Act of March 3, 1879.

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2 SCIENCE-ADVERTISEMENTS

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4 SCIENCE-ADVERTISEMENTS VOL. 97, No. 2511

What did you do today

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4 SCIENCE-ADVERTISEMENTS VOL. 97, NO. 2511

FEBRUARY 12, 1943 SCIENCE-ADVERTISEMENTS 5

Announcing __-

TWO NEW CATALOGSANATOMICAL CHARTS

CATALOG No. 1 54 -12 pages-two colors-a comprehensive listing of anatomycharts.

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FEBRUARY 12, 1943 SCIENCE-ADVERTISEMENTS 5

6 SCIENCE-ADVERTISEMENTS VOL. 97, No. 2511

Typical White Potentiometer stations, U. of Calif. Switch ment at right in large photo. Galvanometer-reading tele-panels connect instruments to thermocouples in remote labs. scopes aim through metal shields at mirrors of L&N High-Time signals, piped from Astronomy Dept., come to equip- Sensitivity Galvanometers.

PRECISE TEMPERATURE MEASUREMENTS

By Chemistry Dept., U. 0f CaliforniaThe problem of providing facilities for highly-precise mea-

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The calorimeters, furnaces, etc., are located at experimentalstations in the labs, convenient to the services, operatinginstruments, gauges, etc., they require. But the preciseWhite Potentiometers and their accessories are in entirelyseparate rooms, which might be termed measuring stations.All connections for thermocouples, timers, telephones, etc.,between stations are by multiple-conductor, lead-coveredsilk insulated telephone cable.

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6 SCIENCE-ADVERTISEMENTS VOL. 97, NO. 2511

SCIENCEVOL. 97 FRIDAY, FEBRUARY 12, 1943 No. 2511

Science, and Its Changing Social Environment: PRO- Special Articles:sso P. W'. BRIDMAN.......................................147 Studies on the Isolation of the Factor Responsible

Digitalis and Some of its Derivatives: DR. HARRY for Tissue Injury in Inflammation: DE. VALY MEN-GOLD. :150 KIN. Cold Agglutinins (Autohemagglutinins) in

Obituary: Primary Atypical Pneumonias: DR. MAXWELL FIN-Franz Carl Schmelkes: DR. L. REINER. Recent LAND andOTHERS .................................................................................... 165

Deaths ... 153Scientific Events: Scientific Apparatus and Laboratory Methods:The British New Year Honors List; The Tingo Production of Pantothenic Acid Deficiency in MiceMaria Experiment Station; Gifts Received by the with Pantoyl Taurine: DR. E. E. SNELL andUniversity of Wisconsin; War Services of the Uni- OTHERS. A New Fixative for Animal Tissues:versity of Illinois; Bare Chemicals; The Research M. ARDELLE CLEVERDON.FixatveforAnimalT 168Award of Eli Lilly and Company; Committee on

AppliedMathematical Statistics of the National Science News ........................................... 8Research Council ...... .......................... 154

Scientific Notes and News .........15................. ........................ 157Discussion:

Further Comrputations in Chemical Progress: ED- SCIENCE: A Weekly Journal devoted to the Advance-WARD THOMAS. Synchrony in Flock Wheeling: ment of Science, edited by J. MCKEEN CATTELL and pub-PROFESSOR R. W. GERARD. Schoolcraft and the lished every Friday byAmerican Ethnological Society: DR. CHASE S.OSBORN and STELLANOVA OSBORN ........... .......... 159 THE SCIENCE PRESS

Special Correspondence: Lancaster, PennsylvaniaWound Healing; Message Received by the Amer-ican Association of Scientific Workers from the Annual Subscription, $6.00 Single Copies, 15 Cts.Soviet Scientists Antifascist Committee .............................. 162 SCIENCE is the official organ of the American Associa-

Scientific Books: tion for the Advancement of Science. Information regard-The "Pirotechnia" of Biringuccio: DR. CHARLES ing membership In the Association may be secured fromthe office of the permanent secretary in the SmithsonDanA. BRowNE. Chemistry: PROFESSOR CECIL V. KING 163 Institution Building, Washington, D. C.

SCIENCE, AND ITS CHANGING SOCIAL ENVIRONMENT'By Professor P. W. BRIDGMANHARVARD UNIVERSITY, CAMBRIDGE, MASS.

THE first part of this address dealt with recentwork of the author in extending the pressure rangeattainable in the laboratory. The subject has beensimilarly treated in the third volume of Science inProgress, published by the Society of Sigma Xi.And now I will turn from these technical matters,

with which I have been personally concerned, to mat-ters of more immediate and vital interest to all of us.In the present world struggle physics has come tooccupy a position in the very front line. A large partof the body of physicists has been asked to divert itsactivities from accustomed channels, and all of us whohave been able have rejoiced that the opportunity hasbeen offered and that we can be of service. Because

1 Part of the retiring presidential address to the Amer-ican Physical Society, given at Columbia University,January 23, 1943.

of the obvious importance of the service that physicsis rendering, many physicists are anticipating, afterthe war, a permanent increase of the appreciation ofthe public for physics, and a great increase in theattractiveness of physics as a profession for our ableryoung men.

There are, however, other aspects of this rosy fu-ture to which I wish to direct your attention. Becauseof the heavy social impact of the products and tech-niques resulting from scientific investigation, there isa growing tendency in many quarters to maintain thatscience, and this of course includes physics, is theservant of society and that all scientific activitiesshould be under complete supervision and control bysociety or the state. This point of view is findingadvocates among scientists themselves. It seems to begrowing in favor in some quarters in this country,