JUNE 23, 1944SCIENCE-ADVERTISEMENTS 9~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

BLAKISTON BOOKS

H vS_|=i~r 3rd By F. L. MEREDITH.ZJ | Clog Edition Tufts College

183 Illw. Designed for the beginning college student, this text presents well organized material822 Pages for courses in personal and community hygiene. It appraises health situations that

$3.50 exist in the life of individuals and peoples, then sets up objectives and instills a desireon the part of the student to do something about attaining them. Teachers say:

"This book is very teachable . . . it contains a great amount of material studentswant to know."

THE SCIENCE of HEALTH TuftsCollege138 Illus. Planned for use in one-hour, one semester college courses in hygiene, this text provides427 Pages well integrated material for the briefer course. A teacher says: " We are using this

$2.50 text with much success. Students find it clear and easy to understand. It's interest-

ing reading and well illustrated."

Bundy's

|ANATOMY and PHYSIOLOGY283 Illus. 7th Edition490 Pages Revised by S. DANA WEEDER, University of Pennsylvania

$2.75This text is well.established for its clear and forceful presentation of the salient facts

of anatomy and physiology. It is planned for beginning college courses.

l ~ANATOMY for PHYSICALEDUCATION

472 Illus. By L. F. EDWARDS, Ohio State University657 Pages This is a text of descriptive and applied anatomy. It considers the principles of

anatomy and then presents a study of the body from the regional standpoint.

Gould's

| ~POCKET MEDICAL DICTIONARYPlain 11th Edition$2.00 Revised by C. V. BROWNLOW and StaffThumbIndexed This handy pocket dictionary gives clear, intelligible definitions of medical and science$2.50 terms and indicates the proper pronunciation of each. It is frequently revised and

kept up-to-date.

1THE BLAKISTON COMPANY Philadelphia 5,

.1 j

SCIENCE-ADVERTISEMENTS 9JUNE 23, 1944

SCIENCE-SUPPLEMENT

SCIENCE NEWSScience Service, Washington, D. C.

PROTECTION FROM MEASLESPROTECTION from measles will be available to children,

and grown-ups too if necessary, through a by-product ofblood donated to the Red Cross for the nation's fightingmen. The protection will be given by a substance calledgamma globulin, separated from blood plasma by Dr.Edwin J. Cohn, of Harvard University. The globulincan be used either to prevent measles or to modify theattack so the patient is not very sick but develops resis-tance to further attack. The American Red Cross, func-tioning as coordinator, will assist in transferring themeasles preventive from the manufacturers to state andlocal health departments. These will pay the cost priceand distribute the material without charge.Announcement of this latest development of the blood

donation program comes from the Navy Department witha detailed progress report by Vice-Admiral Ross T. McIn-tire, Surgeon General of the U. S. Navy.

Fully a year before Pearl Harbor the Navy's Bureauof Medicine and Surgery began the project which hasyielded gamma globulin for the prevention or modifica-tion of measles; concentrated serum albumin for savinglives threatened by shock from battle wounds; fibrin filmand fibrin foam which are proving valuable in surgery ofbattle wounds, especially brain surgery; and blood group-ing globulins essential in blood typing procedures beforetransfusions.

First aim of the program was to develop a concen-trated protein for treatment of shock that would belighter in weight and less bulky than blood plasma. Themobile nature of Naval and Marine operations and theneed to conserve space in all types of ships, planes andland vehicles, dictated this need. It was filled when, in1940, Dr. Cohn perfected a process for separating theprotein fractions of blood plasma, and Captain Lloyd R.Newhouser, of the Navy Medical Corps, developed a satis-factory dispensing package for the albumin which wasto replace plasma in many cases.When, after months of painstaking tests of the albumin

as a shock-reliever, the Navy finally let contracts to manu-facturers for processing it, a foresighted clause was in-cluded directing them to store at low temperatures theplasma fractions which remained after the albumin wasremoved. Various by-products of albumin processing werethen available when their usefulness was established.

Cooperating with the Navy in the program which hasdeveloped these valuable products for Navy, Army and,now, civilian use, are the National Research Council andthe Committee on Medical Research of the Office of Scien-tific Research and Development.

ITEMSSMANGE long-distance bursts causing interference in

high frequency bands, including those assigned to FMbroadcasting, have been discovered by the Federal Com-munications CommAssion. A "burst" is defined as asharp increase in signal strength of momentary duration,

seldom covering more time than is necessary to speak asingle word or to play a note or two of music. Theymay occur at the rate of several hundred an hour. Thebursts, under normal conditions, are not observed nearFM stations. They usually are picked up by receivingsets at a considerable distance from the FM transmitter.Bursts have been observed at distances up to 1,400 milesfrom certain high-powered FM stations, but are neitherso intense nor so numerous as they are at distances of300 to 700 miles. For several months FCC engineers havebeen conducting tests to determine the nature and extentof the interference. The FCC is not ready yet to make astatement as to the cause of the bursts, but research iscontinuing, and a report may be made available soon.

MUcH attention is being attracted by the report of adiet that seems to help patients with high blood pressureand kidney disease. Dr. Walter Kempner, of Duke Uni-versity, developed the diet and reported it to the Chicagomeeting of the American Medical Association. It con-sists solely of rice, fruit juices, sugar, vitamins and iron.Dr. Kempner's theory is that one of the kidneys' func-tions, that of deaminating the amino acids of protein, isdisturbed by lowered oxygen supply and the result is highblood pressure. The rice diet was developed to reduce theamount of protein the kidneys have to handle and thuslower the amount of harmful, abnormal substances whichhe believes causes the high blood pressure. Not allpatients benefit from the diet, though no ill effects fromit have been seen. Blood pressures were reduced in about60 per cent. of the patients, he said.

A NEW fire-detecting and fire-extinguishing system,that signals the driver the moment a fire breaks out andthen extinguishes the flame is being used in U. S. Armytanks, saving many of them from destruction by fire inthe tank itself. The system, developed by Walter Kiddeand Company, consists of a detector containing two fila-ments which are destroyed by fire, closing an electricswitch which causes a red fire signal to appear on theinstrument panel of the tank. The driver pulls a manualcontrol level switch, instantly flooding the engine com-

partment with a blanket of carbon dioxide gas whichsmothers the fire. Operation of the new carbon dioxidefire-fighting system is confined to the engine compartment.

IN an effort to get the most out of our dwindling sup-ply of several western pine species, the Office of PriceAdministration has requested lumber mills to manufacturelath in connection with lumber production. This measurewas taken so that fuller use would be made of the logs,and that a minimum of the precious wood would go towaste. Due largely to over-cutting and fires, the supplyof western pine is far below normal. Lath made fromslabs that would otherwise go to the burner will be usedto manufacture boxes and crates needed for the shipmentof war material, thus stretching the supply of wood forsuch purposes.

VOL. 99, No. 268210

JuNH 23, 1944 SCIENCE-ADVERTISEMENTS

1944 CRO WELL textsSelected Experiments from LABORATORY MANUAL FOR INTRODUCTORY

COLLEGE CHEMISTRYBy JOSEPH A. BABOR and ALEXANDER LEHRMAN, College of the City of New York

Special edition issued to meet the immediate need for a brief and inexpensive but standard laboratorymanual in general chemistry. 128 pages, 8i x 11, $1.00

INTRODUCTION TO QUANTITATIVE ANALYSISBy SAUL B. ARENSON, University of Cincinnati and GEORGE RIEVESCHL,

Parke, Davis and Company. 375 pages, 51 x 8j, $2.75A new text combining the three essentials of a fundamental course, 1) theoretical aspects, 2) laboratorytechnique and procedures, and 3) a wealth of graded problems. Intended for usual one- or two-semestercourse.

Laboratory Notebook for INTRODUCTION TO QUANTITATIVE ANALYSISBy ARENSON and RIEVESCHL. 90 pages, 81 x 11, $.75

QUANTITATIVE ANALYSIS RECORD BOOKBy M. G. MELLON, Purdue University

Prepared specifically to aid students to handle acceptably the numerical results obtained in the laboratory,this compact note book consists of text, detailed examples of records, graphic and numerical logarithmtables, together with 168 pages of ruled ledger sheets. 200 pages, 5j x 7j, $.75

HOW TO SOLVE PROBLEMS IN PHYSICAL CHEMISTRYBy JOSEPH A. BABOR, College of the City of New York, and

GARRETT W. THIESSEN, Monmouth CollegeDesigned to enable students to visualize a given problem, select the proper method for solving it and tocarry it through to.a satisfactory solution. 160 pages, 5S x 8*, $1.25

PLANE AND SPHERICAL TRIGONOMETRYBy HOWARD P. DooLE, University of Nebraska

Especially designed to meet the need for a brief text emphasizing the theoretical parts of trigonometryneeded by engineers and others who use the calculus. 183 pages, 5 x 7*, $1.50

ASTRONOMICAL AIR NAVIGATIONBy Squadron-Leader ROBERT HADINGHAM, R.A.F.O.

A comprehensive text and reference manual embodying the latest methods of celestial navigation forairplanes; for navigators, instructors, and students. 132 pages, 6* x 8, $2.50

GLOBAL GEOGRAPHYBy GEORGE T. RENNER and ASSOCIATES

Events of the past few years have exposed the extent of the geographic ignorance of Americans and someof its tragic results. In this effort to help overcome this shortcoming, the authors have broken withtradition in creating a book new both in content and organization for truly basic courses in college geo-graphy. 728 pages, 165 illustrations, 6* x 9*, $3.75

THOMAS Y! C3oweUOCOMPANY432 Fourth Avenue New York 16, New York

There has been no price increase in any CROWELL text or manual aince before Pearl Harbor

11

SCIENCE-ADVERTISEMENTS VOL. 99, No. 2582

HERE is the book you've been waiting for!

CHEMICAL MACHINERYAn Elementary Treatise on Equipment

for the Process IndustriesBy

E. RAYMOND RIEGELProfessor of Chemistry, University of Buffalo,

Author of "Industrial Chemistry"

PRACTICAL-COMPREHENSIVE-AUTHENTIC-this book is the result of hundredsof inquiries from educational institutions and from all branches of industry. It is designed espe-

cially for the needs of students of chemical and industrial engineering.

FROM SCREENS TO HEAT EXCHANGERS, from bucket elevators to potentiometers,each of the major types of equipment used in the chemical and process industries is described indetail. Specifications and latest available prices are included wherever possible.

DIAGRAMS, PHOTOGRAPHS, AND TABULAR DATA accompany almost every de-scription, making the construction and operation of each machine readily understandable to stu-dents and laymen as well as to engineers.

CLASSIFICATION OF EQUIPMENT by function gives the discussion a natural and logicalorganization which will appeal both to students and to those who are interested primarily in obtain-ing the machine best suited for their particular requirements.

THIS UNIQUE VOLUME WILL BE INVALUABLE TOPlant engineers Designers Plant supervisorsChemical engineers Teachers Technical superintendentsChemists Foremen Machinists

Contents include:Factors in Plant Location * Devices for the Reduction in Size of Materials 0 Screening and Grad-ing Equipment including Electro Magnetic Separators 0 Conveying and Elevating Equipment aTanks * Transferring and Elevating Liquids-Pumps, Blowcases 0 Weighing and ProportioningSolids, Liquids 0 Propelling of Gases 0 Coolers of Gases, Gas Absorbers, Gas Washers, Condensers,Solvent Recovery, Dust Collectors, Bag Filters, including Spray Nozzles * Mixing Devices; StirringAgitation 0 Mixing and Blending Equipment for Solids, for Pastes, for Powders 0 Separation ofSolids from Liquids 0 Evaporators 0 Crystallizers 0 Driers 0 Distilling and FractionatingEquipment 0 Vacuum Producing Equipment; Condensers, Steam Jet Ejectors, Vacuum Pumps -Heat Exchangers 0 Application of Heat and of Cold; Heat Transfer Agents, Kettles, Refrigerants0 Gas Conditioning Hydraulic Pressure Equipment 0 Extreme High Pressure Equipment 0

Instruments.

579 Pages 43 8 Illustrations $5.00

Send Today for New. Free 1944 Catalog "Let's Look It Up" (200 titles)

REINHOLD PUBLISHING CORP.330 West 42nd Street New York 18,, N. Y.

Also publishers of Chemical Engineering Catalog, Metal Industries Catalog, Metals andAlloys, Architectural, Technical, and Engineeiring Books

12

-1

Juxz 23, 1944 SCIENCE-ADVERTISEMENTS 13~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

WRITING ....*Your report on electronic, radio, electri-cal and most technological functions shouldbe put in electronic writing to save time, tobe really explicit, to facilitate proper con-sideration and decision.As an oscillogram vividly traced on theDuMont oscillograph screen, your presen-tation permits of either a quick grasp ofthe situation, or of highly detailed studyif the finer intricacies of the wave form re-ceive due consideration. A photographof the oscillogram provides a permanentrecord. More and more presentations, ex-planations, discussions, are being handledthat way.

* Write for Literature

I .1

LoLag ELECTRICHEATERSand Controls

FOR the safe, economical, and efficient ap-plication of electric heat in the labora-

tory, Aminco LoLag Electric Heaters andControls are the logical choice because theyhave been giving dependable year-in andyear-out service in laboratories throughoutthe world for over ten years.Whether for heating fluids, semi-fluids,

solids, air or other gases, there is an AmincoElectric Heating Unit that will do the jobdependably and efficiently . . . and thereis a wide range of standard units of varioustypes and reliable, time-tested automaticcontrols from which to select, or, Amincoheating specialists can design and buildspecial units for almost any heating re-quirement.

Oven-heating Open-coil TypeFor floor or wall mounting, for group-

ing in any number or arrangement toobtain desired wattages for heatingovens, cabinets, etc.

Left: Flexible immersion type of Aminco electricheater, available In lengths up to 13 ft., which can bebent easily to fit any vessel and nested to providevarious combinations of heater wattages.

Right: Pipe-thread type for screwing into varioustypes of vessels. Single and 3-heat types, with orwithout built-in switches.OTHER TYPES ARE AVAILABLE ALSO

Write for Bulletin A-2075

SCIENCE-ADVERTISEMENTS 13Ads 23, 1944

14 SCIENCE-ADVERTISEMENTS

automatic -tissue processingby any histologic techniqueeffecting routine twenty-fourhour reports on all sections

oatic fixation ... formalin, Bovin, Zenker, or any other elective. method

automatic washing... thorough cleansing by flush-action, constant change

system automatic dehydration ... alcohols, dioxone, acetone or any other

preferred technique, and in any sequence automatic clearlng...chloroform,benzine, xylol, cedarwood oil6 aniline oil, or alternates auotic infiltration

paraffin, celloidin, etc. automatic decalcification ... nitric, formic, picricacids, or other fluids automatic staining of slides with any staining agents.

Descriptive literature available

THE TECHNICON COMPANY215 E. 149th Street * New York 51, N. Y.

SCIENCE-ADVERTISEMENTS VOL. 99, No. 25821-- ---.14

JUNE 23, 1944 SCIENCE-ADVERTISEMENTS 15

NEW!/

"I deliberately smeared 10 minims of machine oil on a condenser lens and re-moved every vestige of it with two sheets of dry tissue"-John Adam Knight,N. Y. Post, 1/14/43 in his column "Photography."

ROSS-ADAMS Lens Tissues repre-sent a radical departure from theusual Japanese style lens tissues.They are smooth, dense and thin ascompared with the soft, porous Japa-nese style lens tissues. Some of thefeatures are given below:

FEATURES...RLOSS-ADAMS Lens Tissues are specially processed, dense, and have consid-erable tensile strength. They will notdisintegrate with manipulation. Thesurface of the tissue Is smooth, therebytending to prevent abrasive dust par-ticles from becoming embedded in thepaper. They have an unusual grease-absorbing quality, easily removing fn-germarks and other oils and greases fromlenses. Unlike soft and porous lenstissues, ROBS-ADAMS tissues will atpermit body oils from the fingers tosmear the surface being cleaned. Thisproperty can be readily tested by wip-ing eyeglasses. A single sheet willeffectively clean a much greater areathan will soft tissues which usually re-quire several thicknesses. The tissuesare free of vegetable or mineral fillerand completely non-abrasive. The den-sity and great strength of these tissueseliminate the breakdown of the fibres-or linting.

ROSS-ADAMS Lens Tissues are nowwidely used by our armed forces and bymanufacturers of precision optics, andhave been tested and approved by in-dependent laboratories, various U. S.

government agencies, and leading lensmanufacturers.

PARTIAL LIST OF USES: Photographic Lenses,Binoculars, Range Finders, Gpggles, Telescopes,Glass and Metal Mirrors and Reflectors, Highlypolished metal surfaces such as metallurgical speci-mens, Color Standards, Microscope Slides, Micro-scope Lenses, Projection Lenses, Condenser Lenses,Protective Glass -Shades, Eyeglasses, Lantern SlideGlasses, Miroscope Cover Glases.

Left: Photomicrograph 60X showing Right: Photomicrograph 60X show-loose construction of regular lens ing dense smooth structure of ROSS-

tissue. ADAMS Lens Tissue.

A-1560 ROSS-ADAMS Lens Tissue, standard size, 100 3 x 5" sheetsin a handy dispensing cardboard carton.................................Each 35¢

A-1562 ROSS-ADAMS Lens Tissue, economy size, 300 414 x 5" sheetsin a handy dispensing cardboard carton ...........................Each $1.00

A-1564 ROSS-ADAMS Lens Tissue, labo-ratory size, 1000 414 x 5" sheetsin a cardboard box ...Per box $3.00

A-1566 ROSS-ADAMS Lens Tissue, tech-

nical size, 300 8% x 14" sheets ina cardboard box Per box $4.50

QUANTITY DISCOUNTS:

Orders for $10.00 or more less 10%

Orders for $50.00 or more less 20%

0

Prices for other sizes on request.

CLAY-ADAMS COAw

SCIENCE-ADVERTISEMENTS 15JuNz 23, 1944

SCIENCE-ADVERTISEMENTS VOL. 99, No. 2582

For MICROSCOPYShillaber's Certified Index ofRefraction Liquids: 1.46-1.82

For determining index of refraction of solidsby microscopical methods. Series A consistsof 91 liquids, range 1.460-1.640 index, intervals0.002. (Select the liquids needed.) Tolerance0.0002. These liquids are neutral, very stable.A valuable tool for identification of inorganicand organic compounds, also for routine checkon purity of batch samples. Ask for Brochure44-RF. Series B & C extends indices to 1.82,ready July 1st. Ask for leaflet No. 182.

Shillaber's Set of Mounting OilsFor preliminary examination of specimens. Tenoils range in index (250C) from 1.46 to 1.64 insteps of 0.02. A useful assortment of mountingmedia from which can be selected the mediumthat gives either maximum transparency ormaximum contrast to selected details. Set of10 oils, in 14 oz. bottles with applicator rods,$5.00

Shillaber's Immersion OilNumerous advantages over cedar oil: non-dry-ing; neutral; low fluorescence; Index (250C)adjusted to 1.5150 (± 0.0002) therefore satis-factory for most exacting photomicrography.Easily cleaned off objective and condenser, doesnot readily entrain air bubbles, therefore savesmuch time in routine work. Two viscosities:one ounce of each grade $1.00; 4 Oz. bottle$1.50; 16 Oz. $4.00

Reagents for Chemical Microscopy(Shillaber Model)

For use with Chamot & Mason's Handbook ofChemical Microscopy. Set No. 1 for use withVolume 1, Physical Methods; Set No. 2 for usewith Volume 2, Chemical Methods. 60 reagentsin each set. Per set $22.50, or ask for leaflet44-CM

NAPHRAX A-A New MountingMediumA synthetic, high index resin as described byWm. D. Fleming, Journal Royal MicroscopicalSociety, LXIII pp. 34-37 (1943). Neutral.Used like Canada Balsam but the solution hasan index of approx. 1.65 and the solid approK.1.69 (Canada Balsam has an index 1.52-1.54).This higher index enhances the visibility ofdetails of low index that would be indistinct orinvisible in media of lower index. 25 cc bottle(solution) $1.25

These items sent in U. S. prepaidif remittance accompanies order.

aR. P. CARGILLE

118 Liberty St. New York 6, N. Y.

16

LaMotte Control EquipmentFor the Dairy Industry

The LaMotte Research Department has developedmany types of tests and equipment for the control ofpH, chlorine, corrosion and boiler feed water In thedairy industry. Write for copy of the LaMotte MilkIndustry Bulletin which includes:

Methods for determining pH of milk, cream,butter and other dairy products.Comparators for superchlorination, sterilizingplant equipment and containers.Equipment for control of corrosion in refrigera-tion and cooling systems, tests of sodium andcalcium brines.Equipment for control of efficient boiler feedwater treatment.

LaMOTTE BLOCK COMPARATOR

This compact LaMotte Outfit greatly facilitatessimple, accurate pH Measurements.Complete with any one set of LaMotte PermanentColor Standards, together with a supply of the cor-responding Indicator solution, marked test tubes andfull instructions. Price $12.50 f.o.b. Baltimore.

LaMotte Chemical

Products Co.Dept. "H," Towson 4,Baltimore, Maryland

A complete line for clinical laboratories de.voted to all branches of chemistry, bacteri-ology, hematology, and parasitology. Testedand checked in our own clinical laboratoriesPurity warranted. Our facilities assure promptshipment of large or small orders. Inquiriesinvited

NEW CATALOGReagents catalogued alphabet. NOWically also according to sub-jects and techniques, plus med.ical reference guide. Catalog READcomprises full line blood test.ing sera including anti-Rh, IcQo_anti-M and anti-N; also re- / ,agents for Wassermann, Kline,and Kahn tests. Write for your / 'a,copy. FREE ON REQUEST. ,

JuNX 23, 1944 SCIENCE-ADVERTISEMENTS 17

NEW DIFCO PRODUCTS

Bacto-Penicillin Mediumis a dehydrated medium designed for use inthe small scale laboratory preparation ofpenicillin extracts.

Bacto-Yeast Beef Agarand

Bacto-Yeast Beef Brothhave been prepared especially for use indetermining the potency of Penicillinaccording to the procedure of Schmidt andMoyer.

Bacto-Fluid Thioglycollate Mediaare prepared in accordance with the formulaeof the N.I.H. and are recommended fordetermining sterility of Penicillin and otherbiologics.

Specify "tDIFCO"THE TRADE NAME OF THE PIONEERS

In the Research and Development of Bacto-Peptone andDehydrated Culture Media.

DIFCO LABORATORIESINCORPORATEDDETROIT, MICHIGAN

ERIC SOBOTKAfor immediate delivery

APOCHROMATICOBJECTIVES

MICROSCOPE LAMPS17 East 40th Street

New York 16, N. Y.

RELAPSING FEVERviii + 130 pages (7 x 10 inches), 14 illustrations, 23 contributors, references,

cloth bound, published 1942.

Relapsing Fever is the eighth symposia volume on important public health prob-lems. This volume is of immediate importance to public health officers and practisingphysicians as well as specialists. The subjects covered include Distribution, Parasitol-ogy, Tick Vectors, Epidemiology, Symptomatology, and Public Health Aspects.

The volume was prepared by a committee of leaders in this field of research, namely,Frederick G. Novy, Honorary Chairman, Malcolm H. Soule, Chairman, Sidney W. Bohls,Gordon E. Davis, Hardy A. Kemp, Walter H. Moursund, and Herlin L. Wynns.

Price, $3.00; special price tomembers of the Association on request.

American Association for the Advancement of ScienceSmithsonian Institution Building

Washington 25, D. C.

1 U_ i.j

JUNE 23, 1944 SCIENCE-ADVERTISEMENTS 17

18 sctEjoK-~4DvERT~gEMEN~g VOL. 99, No. 2582

It's a microscope that keeps 'emfinringMachine guns fire at the rate of more

.than 1000 shots a minute. Each shellreleases an explosive pressure of morethan 40,000 pounds a square inch.

In the thick of action a jammed gunputs the gunner in a. tight spot. That'swhy every link in' the cartridge beltmust be perfect. Metal too soft willtear, metal too brittle will break.

To control the metallurgical.proper-,ties of the steel used in the links- tokeep 'em firing - is one of the many

wartime jobs of Spencer Microscopesand Photomicrographic equipment.

Spencer LENS COMPANYBUPALO, NEW YORK

aEt,-zriFIC INSTRUMENT DIVISION OFAMERICAN OPTICAL COMPANY

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BETISEMENTH VOL. ^ NO. 2582-18