october 6, 1944 science-advertisements...

OCTOBER 6, 1944 SCIENCE-ADVERTISEMENTS 9

Ck~emrnzal Books

* Organic Reagents in Inorganic AnalysisBy Ibert Mellan, Ph.G., M.Sc., F.A.I.C.Organic reagents are described and their reactive groups and resulting com-pounds are demonstrated graphically. 230 qualitative, 240 quantitative (colori-metric, gravimetric and volumetric) tests are included. 682 Pages. $9.00(1941)

* Chemical Dictionary-3rd Edition Thoroughly RevisedBy Ingo W. D. Hackh.Revised by Julius Grant, M.Sc., Ph.D., F.R.I.C.

This new Hackh-Grant Dictionary provides over 57,000 definitions of chemicalterms covering all of modern chemistry and including the latest research findingsin the field. Many tables, formulas, diagrams and portraits are included. 217Illus. 925 Pages. $12.00 (1944)

* Examination of Waters and Water Supplies--5th EditionBy Ernest Suckling, M.R.C.S., D.P.H.

This is a complete guide to the solution of all modern problems concerning theexamination, estimation and purification of waters and water supplies. It in-cludes physical, bacteriological, microscopical, biological and chemical methods.63 Illus. 849 Pages. $12.00 (1943)

* Theory of Emulsions and Their Technical Treatment4th Edition

By William Clayton, D.Sc., F.I.C.This is a thorough, modern study of emulsions with emphasis on their industrialapplication. Many new illustrations and useful tables have been included. 103Illus. 492 Pages. $10.00 (1943)

Order-Blank . . - - - - _ _ m _ _ _ _ - _ _ _ _ m _ _ , _ - - - _ ,Please send the following books and charge my account.

Name ..Address.

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THE BLAKISTON COMPANY Philadelphia 5, Pa.


SCIENCE-SUPPLEMENT VOL. 100, No. 2597

SCIENCE NEWSScience Service, Washington, D. C.

AERIAL PHOTOS FOR AGRICULTURALPRODUCTION SURVEYS

AERIAL maps will be used by the U. S. Census Bureauin conducting the 1945 Farm Census scheduled to starton January 1, is announced by Clarence E. Batschelet,chief of the Geography Division of the Census Bureau.The technique of aerial photography, now being used

widely to prepare military maps, has been used in thepast by the Department of Agriculture in its soil con-

servation program. This will be the first time that aerialphotos will be used on a wide scale to help census-takerslocate farm houses and study agricultural production.

Plans include the aerial mapping of about 360,000 ofthe 6,000,000 farms in the United States. By mappingonly specially selected areas, data will be obtainedwhich will be typical for certain types of agriculture.The aerial photographs which the Census Bureau will use

will come from eight government agencies, including theDepartment of Agriculture and the Coast and GeodeticSurvey.Many townships and counties in farm areas do not have

up-to-date maps. It is impossible, therefore, for census

workers to locate recently developed farms and farm resi-dences. The aerial maps will save much time and moneyin locating these rural properties.

Intensified surveys will also be made in corn, wheat,cotton and other crop areas. The aerial maps will notonly locate the farmhouses, but give an accurate estimateof the plantings. Using these maps as a basis for ques-

tions, census-takers can gather data in sample areas,

which may be applied to similar production areas through-out the nation.

Trained photo-reconnaissance map readers can deter-mine from aerial photos such information as the size ofthe farm, probable number of horses, cows, chickens, in-formation on farm machinery in use, crops raised, elee-trical equipment, and many other points. Aerial mapswill be issued to census-takers at special schools wheremap-reading will be taught, along with instructions forcompiling census information. Upon completion, the ac-

cumulated data will be used to compile special charts fromwhich research analysts will plot trends in farming.

If the 1945 Farm Census fulfills the expectations ofgovernment officials, aerial photographs may play an im-portant role in the decennial census of 1950.-ROBERTN. FARE.

ITEMSVACCINATING babies and small children against whoop-

ing cough will probably become a more popular procedurenow that three kinds of whooping cough vaccines, theSauer, the Kendrick and Eldering, and the Harrison andBell, have been officially approved by the American Med-ical Association. "Significant protection" in the way

of either escaping the disease altogether or having a lesssevere attack is conferred by modern vaccines, Dr. HarrietM. Felton and Miss Cecilia Y. Willard, of Philadelphia,

report in the Journal of the association. Their reportreviews many studies made by various scientific groups.

HOPE that penicillin might prove effective as a remedyfor the acute stage of rheumatic fever gets a severe set-back from two reports to appear in the Journal of theAmerican Medical Association. From the U. S. NavyResearch Unit at the Hospital of the Rockefeller Insti-tute for Medical Research in New York, LieutenantCommander Robert F. Watson, Dr. Sidney Rothbard andDr. Homer F. Swift report that "Penicillin in dosesranging from 1,975,000 to 3,470,000 Oxford units givenover a two-week period to eight young adults with acuterheumatic fever apparently failed to alter the course ofthe disease." Even more discouraging is the report ofsix Army officers working under the Army Air ForcesRheumatic Fever Control Program. They tried penicillinin 38 cases of rheumatic fever at Army Air Force instal-lations and found that it not only failed to help thepatients, but in some cases made the course of the sick-ness worse. The officers conducting the study were

Major Frank P. Foster, Major George E. McEachern,Captain John H. Miller, Lieutenant Colonel Fred E. Ball,Lieutenant Colonel Charles S. Higley and Major Harry A.Warren.

PREPARATIONS are already being made to observe thetotal eclipse of the sun on July 9, 1945, in NorthernSweden. Great interest has been shown in this solareclipse, according to a report in the Monthly AstronomicalNewsletter, prepared at the Harvard Observatory, fromDr. Bertil Lindblad, director of the Stockholm Ob-servatory. The path of the total eclipse, which will beginnear Boise, Idaho, passes through Butte, Mont., andYorkton, Canada. Crossing Hudson Bay, it goes throughlower Greenland, into northern Scandinavia and on intoUSSR. Northern Sweden will be a good place from whichto observe the eclipse. It will begin there in the earlyafternoon at about two and end at approximately fouro'clock, Swedish standard time.

FIVE former B-17 Flying Fortresses, loaned by theUnited States to the Swedish Government, which in turnhas assigned them to Aerotransport, a civilian airline,have replenished Sweden's dwindling supply of commer-

cial airplanes. After the war, Aerotransport will beallowed to buy the bombers outright. Three of the planeshave been modified to make space for three tons of cargo

and fourteen passengers in the hold of the plane thatonce carried gun crews and bombs. The two other shipshave been broken up to provide replacement parts. Therange of these planes is such that from Sweden they can

reach any point in Europe without stopping to refuel andbe serviced. They will be used to carry air mail andpassengers to Great Britain. Two of Sweden's previouscivilian planes were shot down by the Nazis over theNorth Sea last year. This left the Swedish airline withonly three planes before receiving the B-17'a.

10


tc~~X-weff~a7m ~ '/Uon e9

GENERAL CHEMISTRYBy JOHN ARREND TIMM, Simmons College. International Chemical Series. 691 pages, $3.75

Presents general chemistry clearly and graphically in a vivid style that will capture and hold the interest of thestudent. One of the features of the text is the sound modern approach to the fundamental theory. The Lowry-BrBnsted acid-base definitions are used consistently, yet the older definitions are carefully pointed out. Recentindustrial developments are included.

ADSORPTIONBy C. L. MANTELL, Consulting Chemical Engineer. Chemical Engineering Series. In press-ready inNovember

Practice, rather than theory, is the keynote of this new approach to the subject of adsorption written from theviewpoint of industrial procedure, the designing engineer, and the operator of equipment. Emphasizing its unitoperation aspects, the book covers adsorption in industry, and discusses such varied fields as refining operations,air conditioning, elimination of toxic materials, etc.

COMMERCIAL METHODS OF ANALYSISBy FOSTER DEE SNELL and FRANK M. BIFFEN, Foster D. Snell, Inc. International Chemical Series. 739pages, $6.00

Provides a thorough grounding for the student about to enter industry, and a valuable aid for the practisinganalyst. The authors cover a broad range of methods of chemical analysis for use in evaluating the innumerablecomplex commercial products on the market today.

LABORATORY MANUAL FOR GENERAL ZOOLOGYBy TRACY I. STORER, University of California at Davis. McGraw-Hill Publications in the ZoologicalSciences. 154 pages, $1.25

Designed to accompany Storer's highly successful text General Zoology, this manual for the beginning courseincludes detailed exercises on the structure and physiology of the frog, exercises on the general principles of animalbiology, and others on common representatives of the principal groups of animals from amoeba to amphioxus.

SUGGESTIONS FOR LABORATORY INSTRUCTORSBy TRACY I. STORER. (Supplied gratis to users of the Laboratory Manual)

Offers suggestions regarding the laboratory demonstrations and procedures, to aid the instructor in conducting hisclasses. A feature of the booklet is the inclusion of 32 useful formulas.

THEORY AND APPLICATIONS OF ELECTRON TUBES. New second editionBy HERBERT J. REICH, University of Illinois. 694 pages, $5.00

Assembles and coordinates present knowledge of the theory and application of electron tubes. The basic principlespresented are applicable to radio engineering problems, as well as to industrial electronics, power control, electricalmeasurements, and other fields of use. The new edition brings this outstanding textyap to date as regards themore important developments of the past five years.

HISTORICAL GEOLOGY. The Geologic History of North AmericaBy RUSSELL C. HUSSEY, University of Michigan. 479 pages, $3.50

A lucid and well organized introductory text that presents the geologic history of North America and its inhabi-tants throughout two billion years. A special attempt has been made to cover broad panoramas of importantevents rather than a mass of details. Fundamental principles are considered first and technical terms are reducedto a minimum.

CLIMATOLOGYBy BERNHARD HAURWITz and JAMES M. AUSTIN, Massachusetts Institute of Technology. 408 pages, $4.50

A treatment of general climatology and of the climates of the earth, written primarily for meteorologists. Morethan half of the book is devoted to a separate discussion of the climate of each continent and the oceans, from thepoint of view of the weather forecaster.

Send for copies on approval

McGRAW-HILL BOOK COMPANY, INC.330 West 42nd Street, New York 18, N. Y. Aldwych House, London, W.C.1

12 SCIENCE-ADVERTISEMENTS100, No. 2597

---WILEYBOOKS

THE THEORY OF RESONANCE AND ITSAPPLICATION TO ORGANIC CHEMISTRY ABy GEORGE WILLARD WHELAND, Department of Chemistry, University 319of Chicago 51A complete treatment of resonance directed to the organic chemist, this book Probablwill also prove of value to physical chemists in industrial research. Theapproach is non-mathematical, and assumes no previous acquaintance withquantum mechanics. The book lays a thorough groundwork in the studyof resonance. Ready in October.

INTRODUCTION TO PARASITOLOGYSeventh Edition By ASA C. CHANDLER, Professor of Biology, The Rice Institute

Approx.713 pages Up to the minute and completely revised, the seventh edition of

5j by 8* known work contains the many advances made in this field in theProbable Price years. With the war focussing attention on parasitic diseases, res

$5.00 parasites has been speeded up and much new data accumulated.*50 vn~tnln ninA +;r§vnalmrhlr01^+ln:taan h^ #%.Pt;as hm -.n4w^A,

kpprox.9 pages1 by 8*[e Price$4.50

the well-past fewsearch on]his mostlsan+: ohmoLern ana LimeLy DooK a8is usCUsses mIe possiUULo y or ime mLrocLucTlLon or

new parasites into this country as a result of the war. Ready in October.

STREAM SANITATIONBy EARLE B. PHELPS, Professor Emeritus, Sanitary Science, ColumbiaUniversityHere is a new book on the basic principles of stream sanitation and remedialcontrol measures. Conservation of resources is considered, and the publichealth aspects of the subject are taken up in relation to water supply. Inaddition, the principles of sewage disposal are discussed in terms of streamsanitation. The book includes a chapter on Stream Microbiology by JamesB. Lackey, United States Public Health Service, Cincinnati. Ready inOctober.

Seventh EditionVolume I834 pages6 by 9$10.00

Approx.275 pages51 by 8*

Probable Price$4.00

DANA'S SYSTEM OF MINERALOGYRewritten and greatly enlarged by CHARLES PALACHE, HARRY BER-MAN, CLIFFORD FRONDEL; Harvard University

This seventh edition of the classic work, marking its centennial anniversary,is so thoroughly revised as to be essentially a new book. Volume I includes:a new mineral classification; a new elastic series of classification numbersfor species; new data derived from x-ray crystallography, and a new formof presentation of crystallographic data; revision of specific gravities basedon new observations; introduction of the optical characters of the opaqueminerals; a new chemical treatment of species; a new method of treating aseries of minerals as if it were a single-species description; expansion of theannotation and reference section.

JOHN WILEY & SONS, INC., 440-4th Avc., New York 16, N. Y.

12 SCIENCE-ADVERTISEMENTS vou loo; No. 2597

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14 SCIENCE-ADVERTISEMENTS VOL. 100, No. 2597

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A simplified inexpensive instrument for recording electricalpotentials of the brain. Built-in interference eliminatorspermit use anywhere. Inkless records no photographyor film-development required. Instantaneous localizationwith any 2 of the 10 leads.All Garceau Electroencephalographs operate en-tirely from the 115 volts, 50 or 60 cycle power lines.

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Laboratory ReagentsGUARD

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OCTO~~BR6,14 W NO-D ETS M NS1

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";Photographic Platesfor Use inSpectroscopy an Astronomy

FIFTH EDITIONA new, fully revised edition of this well-known publication is

available. In it are listed the characteristics of the special plates forscientific work which are made in the Kodak Research Laboratories. Thereare over one hundred kinds of these plates, distributed among seven basictypes of emulsion, each carefully prepared to provide desirable combinationsof speed; contrast, granularity, and resolving power. They are sensitized invarious ways to permit photography in spectral regions ranging from theshort-wave-length ultraviolet to the infrared at 12,OOOA.

A copy of the new edition of the booklet will be sent free upon request.

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18SINEADETSMNToo.10,Nb29

Spencer No. 888 Clinical Microtome complete with CO2 freezing acc..rsories.

Speed Saves a LifeA commander and pharmacist's mate

are preparing to cut thin sections oftissue taken from a member of the Navypersonnel. Speed is essential, for theman is on the operating table and a

diagnosis of the pathology is necessary.

A Spencer Clinical Microtome is usedto freeze the tissue and cut sections. Ittakes only a minute or two to get a

section for microscopic examination.The photograph above was made at

the U. S. Naval Hospital at St. Albans,Long Island, where Navy, Coast Guard

and Marine Corps men, many of whomare flown from battlefronts by air trans-port, are given the benefit of the mostadvanced medical skill.

Spencer LENS COMPANYBUFFALO, NEW YORK

SCIENTIFIC INSTRUMENT DIVISION OFAMERICAN OPTICAL COMPANY

SCIENCE-ADVERTIBEJ[ENTS VOL. 100, No. 259718

october 6, 1944 science-advertisements...

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