FREE Day Trial UNITRON Microscope Prove their quality laboratory! · 2005. 7. 15. · FREE 10 Day...
Transcript of FREE Day Trial UNITRON Microscope Prove their quality laboratory! · 2005. 7. 15. · FREE 10 Day...
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FREE 10 Day Trial on any UNITRON MicroscopeProve their value and quality in your own laboratory!
UNITRON Photomicrography SetDuplicates the performance of costly appara-tus. Mounting brackets adjust to accommo-date your present camera (35mm., No. 120,No. 127, etc.). Viewing telescope permitsall adjustments to be made while camera isin place and allows continuous observation ofthe specimen even during time exposures.
Only $39.95
UNITRON Phase Contrast, MPEIndispensable for the study of living cells andother highly transparent material. Continuoustransition from phase to bright-field micros-copy by adjusting condenser height. Choice of4 contrasts. Mechanical stage. Three phaseobjectives: PlOX, P4OX, P1OOX. Eyepieces:5X, lOX, 15X.
OnlyStudent Model MPEA, 20-600X.
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UNITRON Camera Microscopeand Metallograph
A completely self-contained unit for visualobservation, projection, and photography ofboth opaque and transparent specimens. Built-in 31,4' x 414" camera, transformer, andilluminator. Optics include 5 objectives and h7 eyepieces. Mechanical stage, polarizing ap-paratus, micrometers, etc. Magnification: 25-2000X.Low power accessories, 35mm camera attach-ment, and binocular eyepiece available at extracost.
Only $1,145
$265
inly $99
UNITRON Metallurgical, MMUFor metals and opaque specimens, and alsotransparent specimens under both ordinaryand polarized light. Vertical, oblique, andtransmitted illumination. Transformer housedin microscope base. Focusable stage. Polarizingappatus and filters. Objeoives: 5X, lOX.40X, IOOX, Eyepieces: 5X, lOX, 15R.
Only $287Student Model MMA, 25-600X.
Only $149
UNITRON Stereoscopic, MSHA versatile laboratory instrument givingan exceptionally wide field of view withgreat depth of focus Inclined binocularhead with distance and diopter adjust-ments. Revolving nosepiece. Separate lowstand. Choice of 3 objectives among IX,2X, 3X, 6X. Eyepieces: 8X, 12X, 15X
Only $3141Low stand models available.
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The low cost of UNITRON MICROSCOPES has madeit possible for even the laboratory with limited resourcesto have at its disposal modern microscopes of unsurpassedprecision. Large organizations as well as small have beenquick to recognize the outstanding value of UNITRONMICROSCOPES as well as their unexcelled optical andmechanical performance. Well known users include lead-ing universities, industrial firms, and research laboratoriessuch as:Harvard UniversityGeneral Motors Corp.U. S. Dep't. of AgricultureCornell UniversityPrinceton UniversityUniversity of MichiganCBS HytronIBM CorporationU. S. ArmyU. S. NavyNational Bureau of Standards
Union Carbide and Carbon Co.Brown UniversityGeneral Electric Co.Northwestern UniversityGoodyear Atomic Corp.Corn Products Refining Co.Mass. Inst. of TechnologyYale UniversityArthur D. Little, Inc.Raytheon Manufacturing Co.Sperry Products
We invite you to try any UNITRON Microscope in yourown laboratory for 10 days at absolutely no cost orobligation. Let the instrument prove its value to youbefore you decide to purchase.
The UNITRON Microscope Catalogis yours for the asking!
This colorful illustrated catalog gives complete specifications on allof the instruments briefly described on this page as well as otherswhich we know you will find of interest. Write for your free copy.
UNITED SCIENTIFICCOMPANY
264-6 Milk St., Dept. G.S., Boston 9, Mass.
INI ITRtN RinnriJnsr MnAIPuCv I* I I* r Iv9_uwuI* ssuwzuBuilt-in graduated mechanical stage. Accessorygraduated monocular tube. Fine focus cali-brated in microns. Four objectives: 4X, lOX,40X, lOOX. Paired eyepieces: 5X, lOX, 15X.Model BMLK: for ordinary microscopy, con-denser N.A. 1.4.
Only $399Model BMPE: binocular version of Phasemodel MPE described above.
Only $490I--------------
UNITRON Auto-illumination,MLU
An ideal laboratory or medical microscope.Built-in illuminating system with transformerhoused in microscope base. An eyepieceprojection prism is included which makes theinstrument a self-contained small projector.Graduated mechanical stage. Objectives: IOX,40X, 10OX. Eyepieces: 5X, 1OX, 15X.
Only $229Model MLK, similar to above, without auto-illumination feature.
Only $198_
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from Saunders
Krueger's Microbiology
This superbly written, easy-to-understand text is ideal for introductorycourses in general bacteriology or microbiology. All the basic principles,concepts and viewpoints of microbiology are brought into sharp, clear focus.
Every aspect of microbiology is covered . . . without unduly emphasizing anyparticular branch of the subject. The book's scope embraces: a general surveyof the subject plus a historical introduction; the principal types of micro-organisms; physiological aspects of microorganisms; microbiologic techniquesand methods including the action of chemotherapeutic agents on microorgan-isms; application of microbiology to various aspects of everyday life; and a dis-cussion of the disease producing activities of microorganisms.
Principles of Microbiology. By WALTER W. KRUEGER, Professor of Bacteriology, Grand Rapids Junior College,Grand Rapids, Michigan. 648 pages, 6" x 9", with 148 illustrations. $5.50.
New (2nd) Edition - Turner's EndocrinologyThis New (2nd) Edition constitutes a thorough revision of almost every chapterto incorporate the most up-to-date concepts of endocrinology viewed on abroad biologic level. Some new chapters have been added: The Principles ofEndocrinology, Adaptive Reactions to Stress and Endocrine-Like Mechanisms.More attention has been devoted to neurosecretion, in keeping with theconcept that neurosecretory cells perform a liaison role, connecting the nervousand endocrine systems.The new order of topics provides a more logical arrangement of material. Thesequence in each chapter is: anatomy, biochemistry, physiology and a generaltreatment of clinical applications. New photographs illustrating typicalendocrine disturbances in man and animals have been added.
General Endocrinology. By C. DONNELL TURNER, Ph.D., Lecturer in Biology, Tokyo Army Education Center,Tokyo, Japan. About 600 pages, 6" x 9", with 349 illustrations on 160 figures.
New (2nd) Edition-Ready in May, 1955
W. B. SAUNDERS COMPANYWest Washington Square Philadelphia 5
29 APRIL 1955 1A
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MONOMOLECULAR LAYERS
Edited by Harry Sobotka6 x 9 inches, 215 pages, 62 illustrations, index,
clothbound, April 1954Price $4.25. AAAS members' prepaid order price $3.75
A symposium volume of the American Association for theAdvancement of Science
The aim of this volume is to give a cross section of recent progress in thefield of monomolecular layers-on water surfaces, solid surfaces, and oil-waterinterfaces. The papers supply fundamental data for problems in lubricationand detergency, as well as for questions of biochemical concern such as thedeternmination of molecular weights of proteins.
The variety and scope of the volume suggest that two-dimensional chem-istry should not be regarded as an isolated specialty, but that its methods andconcepts impinge on physical and colloid chemistry, on organic and biochem-istry; they contribute to analytical chemistry and to chemical engineering andtechnology.
The participants comprise some of the pioneer research workers in thisfield of chemistry. The papers review the work of others and report the con-tributions of the authors.
CONTENTSModern Film Techniques and Their Application
to Biochemical ReactionsThe Determination of Molecular Weights of
Proteins by the Horizontal Surface BalanceMechanical Properties of the Surface Films on
Aqueous Solutions of DetergentsStudy of Adsorption at a Solution-Air Interface
by RadiotracsDeposited Radiove MonolayersHydrophobic Monolayers and Their Adsorption
from Aqueous SolutionA Review of the Properties of Films at Oil-Water
InterfacesChemical Reactions of Simple and Mixed Mono.
molecular LayersChemical Reactions and Electric Potential in
Monolayers
HANS TRURNIT, Army Chemical Center, Md.E. MISHUCK and F. EIRICHPolytechnic Institute of BrooklynA. P. BRADY and A. G. BROWNStanford Research InstituteJ. K. DIXON, C. M. JUDSON, and D. J. SALLEYAmerican Cyanamid Co., Stamford, Conn.D. E. BEISCHER, U. S. Naval Schoolof Aviation Medicine, PensacolaELAINE G. SHAFRIN and W uLAM A. ZISMANNaval Research Laboratory, WashingtonE. HUTCHINSON, Stanford UniversityHARRY SOBOTKA and SHIRLEY ROSENBERGThe Mount Sinai Hospital, New YorkE. HAVINGA, University of Leiden
American Association for the Advancement of Science1515 Massachusetts Avenue, NW, Washington 5, D. C.
English Agents: Bailey Bros & Swinfez, Ltd., 46 St GilesHh Stet o W. C 2IL .j2A SCIENCE) VOL. 121
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G.A.B. Interference Filters(Made in Switzerland)
for isolating narrow spectral bands
aI5 II I AI I I I_Setrl Rg 400-900 mllimicrons
Spcta W }+Rfidf4Tth121 m§ Trae. 45-50Sie 2"l x l2" Ohr size on orde'T|r.|_
-~~~~~~ 7l-It JI L N! !LB I I In d7Sz^9Szs-Ks
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Solubility,formation of
colloidal parti-cles', and surface
reactions in silicaand silicate systemsare clearly treated
THE COLLOIDCHEMISTRYOF SILICA& SILICATES
By RALPH K. ILER, Research Manager, GrasselliChemicals Department, E. I. du Pont de Nemoursand Company, Inc., Experimental Station, Wilming-ton, Delaware
FOR the first time the numerous aspects of the chem-istry of silica and silicates are brought together andconsidered from the standpoint of colloid science. Thestructure and behavior of the major colloidal mineralsof the clay, asbestos, and mica classes are reviewed andthe interaction of silicic acid with organic compoundsreveals points of significance to biologists.
Contents. Preface. The Silica-Water System. The Solu-ble Silicates. The Chemistry of Silicic Acid. Esters ofSilicic and Polysilicic Acid. Colloidal Silica. AmorphousSilica Gels and Powders. Colloidal Silicates. SurfaceChemistry of Silica and Silicates. Silica in LivingOrganisms. Author Index. Subject Index.
336 pages, 20 tables, 62 figures. $5.50
Cornell University Press124 Roberts Place, Ithaca, New York
AAAS SYMPOSIUM VOLUME
SOVIET SCIENCESecond Printing
Russian Genetics
Russian Physiology andPathology
Russian Psychology andPsychiatry
Scientific Method andSocial Science: Eastand West
Russian Contribution toSoil Science
Soviet Physics andChemistry
Soviet MathematicsScience and IntellectualFreedom in Russia
An Appraisal of Sciencein the USSR
TheodosiusDobzhansky
W. Horsley Gantt
Ivan D. London
Russell L. Ackoff
J. S. Joffe
John TurkevichJ. R. Kline
Lazar Volin
Conway Zirkle
6 x 9 inches, clothbound, 115 pages, price $1.25
AMERICAN ASSOCIATION FOR THEADVANCEMENT OF SCIENCE1515 Mass. Ave., NW, Washington 5, D. C.
SCIENCE, VOL. 121
GARCEAU ELECTROENCEPHALOGRAPHSA.C. Operated No BatteriesInkless Writing Require no Shieldlng
Shipped Ready to Run Prompt Delivery
THE JUNIOR GARCEAUELECTROENCEPHALOGRAPH
A simplified inexpensive instrument for recording electricalpotentials of the brain. Built-in interference eliminators per-mit use anywhere. Inkless records-no photography or film-development required. Instantaneous localization with any2 of the 10 leads. Price $575.00 complete.
All Garceau Electroencephalographs operate en-tirely from the 115 volts 50 or 60 cycle power lines.
ELECTRO-MEDICAL LABORATORY, INC.SOUTH WOODSTOCK 2, VERMONT
I
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4A
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.PROFESSIOAL TYPE_el PR-2 Forcal research visual
ervation and pho-
icrogra-phy. Auto-
icILLUMINATOR
Whatever your microscopy requirements-from general
observation to critical research,, visual or photomicro-
...graphic-one of these 3 new illuminators will save you
time and ensure you the bright, easy-to-see images you need.
.. ......
isual observations
photomicrography. Comfortable to the touch, even after hours of use.
hintensity; quick Easy on your eyes, too: no stray light, no glare.ising.
Lamp is replaced in seconds automatically centered!
0 Dustproof, trouble-free construction.
*Sturdy, well balanced-no tip-over.
WRITE FOR DETAILED LITERATURE* Ask for Folder D-1042. Bausch
& Lomb Optical Co., 64263 St. Paul St., Rochester 2, N. Y-
Americs onlycopleteoticalsurce..fromgasstoinL
America's only complete optical source . .. from glass to finished product.
SCIENCE, VOL. 121