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Antimicrobial Agents and Chemother-apy, 1963. Proceedings, Third InterscienceConference (Washington, D.C.), October1963. J. C. Sylvester, Ed. American Soc.for Microbiology, Ann Arbor, Mich.,1963. 820 pp. Illus. $12.Aphasia in Adults: Diagnosis, Progno-

sis, and Treatment. Hildred Schuell, JamesJ. Jenkins, and Edward Jimenez-Pabon.Harper and Row, New York, 1964. 440pp. Illus. $12.An Approach to Dental Prosthetics. D.

C. Berry and J. K. Wilkie. Pergamon,London; Macmillan, New York, 1964.127 pp. Illus. $4.75.The Bacteria. A treatise on structure

and function. vol. 5, Heredity. I. C. Gun-salus and Roger Y. Stanier, Eds. AcademicPress, New York, 1964. 533 pp. Illus. $16.

Bacterial Endotoxins. Proceedings of asymposium (New Brunswick, N.J.), Sep-tember 1963. Maurice Landy and WernerBraun, Eds. Rutgers Univ. Press, NewBrunswick, N.J., 1964. 707 pp. Illus. $12.

Bacteriologia y Virologia Medicas. Eu-staquio Roch. Editorial Porrua, MexicoCity, 1964. 645 pp. Illus.The Basis of Human Evolution. Bertram

S. Kraus. Harper and Row, New York.1964. 396 pp. Illus. Paper, $4.75; cloth,$6.50.The Biochemical Aspects of Hormone

Action. A symposium (St. Louis, Mo.).1962. Albert B. Eisenstein, Ed. Little,Brown, Boston, 1964. 256 pp. Illus. $8.50.

Biochemistry and Behavior. Samuel Eid-uson, Edward Geller, Arthur Yuwiler, andBernice T. Eiduson. Van Nostrand, Prince-ton, N.J., 1964. 566 pp. Illus. $15.

Biochemistry of Phenolic Compounds.J. B. Harborne, Ed. Academic Press, NewYork, 1964. 628 pp. Illus.The Biochemistry of Semen and of the

Male Reproductive Tract. Thaddeus Mann.Methuen, London; Wiley, New York,1964. 517 pp. Illus. $16.50.

Biologie de l'Amerique Australe. vols.1 and 2, ttudes stir la Faune dii Sol. Dela-mare Deboutteville and Eduardo Rapo-port, Eds. Editions du Centre National dela Recherche Scientifique, Paris. vol. 1,657 pp., Illus., 1962; vol. 2, 399 pp., Illus.$16.60.

Biology of the Antarctic Seas. vol. 1.Milton 0. Lee, Ed. American GeophysicalUnion, Washington, D.C., 1964. 88 pp.Illus. $ 10.The Biology of the Trace Elements.

Their role in nutrition. Karl H. Schiitte.Lippincott, Philadelphia, 1964. 248 pp.Illus. $8.

Bleeding in the Surgical Patient (Ann.N.Y. Acad. Sciences, 115, art. 1). HaroldE. Whipple, Ed. New York Acad. of Sci-ences, New York, 1964. 546 pp. Illus.Paper, $7.Bone and Tooth. Proceedings of a con-

ference (Oxford, England) April 1963.H. J. J. Blackwood, Ed. Pergamon, Lon-don; Macmillan, New York, 1964. 443 pp.Illus. $15.

Cellular Fine Structure. An introductorystudent text and atlas. James A. Freemanand Jack C. Geer. McGraw-Hill, NewYork, 1964. 208 pp. Illus. $9.50.The Chemical Origin of Life. Alexander

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I. Oparin. Translated from the Russianby Ann Synge. Thomas, Springfield, Ill.,1964. 152 pp. Illus. $6.75.The Chemistry of Some Life Processes.

Vernon H. Cheldelin and R. W. New-burgh. Reinhold, New York; Chapmanand Hall, London, 1964. 128 pp. Illus.Paper, $1.95.

Chemotherapie maligner Tumoren. Do-sierungsprobleme-Untersuchungen zumWirkmechanismus von Cyclophosphamid.Bielefelder Symposion, November 1962.Hilmar Wilmanns, Ed. Schattauer, Stutt-gart, Germany, 1964. 228 pp. Illus. DM.32.The Conduction of the Nervous Im-

pulse. A. L. Hodgkin. Thomas, Spring-field, 111., 1964. 108 pp. Illus. $5.50

Congenital Malformations. Second In-ternational Conference (New York), July1963. Compiled and edited by the Inter-national Medical Congress. The Congress,New York, 1964. 456 pp. Illus.

Cunningham's Textbook of Anatomy. G.J. Romanes, Ed. Oxford Univ. Press, NewYork, ed. 10, 1964. 1028 pp. Illus. $22.50.Dynamic Pathology. Structural and func-

tional mechanisms of disease. MauriceM. Black and Bernard M. Wagner. Mosby,St. Louis, Mo., 1964. 296 pp. Illus. $8.The Ecology of Rocky Shores. J. R.

Lewis. English Universities Press, London.1964. 335 pp. Illus. 42s.

Electron Microscopic Anatomy. StanleyM. Kurtz, Ed. Academic Press, New York,1964. 437 pp. Illus. $14.

Electronic Aspects of Biochemistry. Pro-ceedings of a symposium (Ravello, Italy),September 1963. Bernard Pullman, Ed.Academic Press, New York, 1964. 598 pp.Illus. $20.Environmental Biology. vol. 1. R. F.

Morgan. Pergamon, London; Macmillan.New York, 1963. 254 pp. Illus. Paper,$2.95.Environmental Measurement and Inter-

pretation. Robert B. Platt and John F.Griffiths. Reinhold, New York; Chapmanand Hall, London, 1964. 249 pp. Illus.$8.75.

Enzymes. Malcolm Dixon and EdwinC. Webb. Academic Press, New York,ed. 2, 1964. 970 pp. Illus. $16.

Essentials of Practical Microtechnique.Albert E. Galigher and Eugene N. Koz-loff. Lea and Febiger, Philadelphia, 1964.484 pp. Illus. $10.

Evolution of Psychosomatic Concepts.Anorexia nervosa: a paradigm. M. RalphKaufman and Marcel Heiman, Eds. In-ternational Universities Press, NewYork, 1964. 409 pp. $10.

Experimental Chemotherapy. vol. 3, pt.2, Chemotherapy of Bacterial Infections.Chemotherapy of fungal infections. Chem-otherapy of rickettsial and viral infections.R. J. Schnitzer and Frank Hawking, Eds.Academic Press, New York, 1964. 667 pp.Illus. $22 until 31 Dec.; $25.

Fatty Acids: Their Chemistry, Proper-ties, Production, and Uses. pt. 3. Klare S.Markley, Ed. Interscience (Wiley), NewYork, ed. 2, 1964. 1004 pp. Illus. $35.The Fossil Evidence for Human Evolu-

tion. An introduction to the study ofpaleoanthropology. W. E. LeGros Clark.Univ. of Chicago Press, Chicago, ed. 2,1964. 213 pp. Illus. $6.General Science: Biology. F. E. Clegg.

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Genetics Laboratory Exercises. Eldon J.Gardner. Burgess, Minneapolis, Minn., ed.4, 1964. 79 pp. Illus. Paper, $2.85.

Grasses and Grasslands. C. Barnard, Ed.Macmillan, London; St. Martin's Press,New York, 1964. 279 pp. Illus. $10.

Heredity. David M. Bonner and StanleyE. Mills. Prentice-Hall, Englewood Cliffs,N.J., ed. 2, 1964. 127 pp. Illus. Paper,$1.75; cloth, $3.95.Hormones and Evolution. E. J. W. Bar-

rington. Van Nostrand, Princeton, N.J.,1964. 164 pp. Illus. $3.95.Human Genetics. Victor A. McKusick.

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Industry and Tropical Health, V. Pro-ceedings of a conference (Boston), Octo-ber 1963. Published for the IndustrialCouncil for Tropical Health by the Har-vard School of Public Health, Boston,1964. 243 pp. Illus. $10.The Insects. Url Lanham. Columbia

Univ. Press, New York, 1964. 302 pp.Illus. $6.95.

Introduction to Cell Differentiation.Nelson T. Spratt, Jr. Reinhold, New York;Chapman and Hall, London, 1964. 127pp. Illus. Paper, $1.95.An Introduction to Comparative Bio-

chemistry. Ernest Baldwin. CambridgeUniv. Press, New York, ed. 4, 1964. 199pp. Illus. $2.75.Introduction to Genetics: A Program

for Self-Instruction. Edward J. Kormondy.McGraw-Hill, New York, 1964. 269 pp.Illus. $5.95.

Introduction to Molecular Biology. G.H. Haggis, D. Michie, A. R. Muir, K. B.Roberts, and P. M. B. Walker. Wiley,New York, 1964. 413 pp. Illus. $7.50.An IntroductiQn to the Chemistry of

Carbohydrates. R. D. Guthrie and JohnHoneyman. Oxford Univ. Press, NewYork, ed. 2, 1964. 152 pp. Illus. $3.40.

Kurzes Lehrbuch der Pharmakologie. G.Kuschinsky and H. Liillmann: Thieme,Stuttgart, Germany, 1964. 339 pp. Illus.DM. 33.The Laws of Bone Structure. H. M.

Frost. Thomas, Springfield, Ill., 1964. 181pp. Illus. $7.50.The Life of the Green Plant. Arthur

W. Galston. Prentice-Hall, EnglewoodCliffs, N.J., ed. 2, 1964. 128 pp. Illus. Pa-per, $1.75; cloth, $395.The Life of the Rainbow Lizard. Vernon

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H. N. Munro and J. B. Allison, Eds.Academic Press, New York, 1964. 658pp. Illus. $21.Manual of Comparative Anatomy. A

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therapy. Perry, London; Holt, Rinehart,and Winston, New York, 1964. 288 pp.$5.50.

Nutrition: A Comprehensive Treatise.vol. 1, Macroniutrients (aizdNditr-ienit Ele-tneizts. George H. Beaton and Earle Wil-lard McHenry, Eds. Academic Press, NewYork, 1964. 565 pp. IllIs. $18.50.

Physical Techniques in Biological Re-search. vol. 5, pt. A. ElectrophysiologicalMethods. Academic Press, New York,1964. 478 pp. Illus. $16.The Physiological Effects of High Alti-

tude. Proceedings of a symposium (Inter-laken, Switzerland), September 1962. W.H. Weihe, Ed. Pergamon, London; Mac-millan, New York, 1964. 375 pp. Illus.$12.The Physiology of Diurnal Rhythms.

Janet E. Harker. Cambridge Univ. Press.New York, 1964. 122 pp. IllUs. $3.95.The Physiology of Human Pregnancy.

Frank E. Hytten and Isabella Leitch.Davis, Philadelphia, 1964. 475. pp. Illus.$11.The Physiology of Insecta. vol. 1. Mor-

ris Rockstein, Ed. Academic Press, NewYork. 1964. 654 pp. Illus. $22.

Physiology of the Amphibia. John A.Moore, Ed. Academic Press, New York,1964. 666 pp. Illus. $18.Plant Biochemistry. D. D. Davies, J.

Giovanelli, and Tom ap Rees. Davis, Phil-adelphia, 1964. 466 pp. Illus. $10.50.

Plants at Work. A summary of plantphysiology. F. C. Steward. Addison-Wes-ley, Reading, Mass., 1964. 192 pp. IllIs.$2.95.

Principles of Preventive Dentistry. D. H.Goose and R. L. Hartles. Pergamon, Lon-don; Macmillan, New York, 1964. 141pp. Illus. $4.50.

Progress in Protozoology. Proceedingsof the First International Congress(Prague), August 1961. J. Ludvik, J. Loin,and J. Vcivra, Eds. Czechoslovak Acad.of Sciences, Prague; Academic Press,New York, 1963. 730 pp. Illus. Plates.$24.

Protein Metabolism in the Plant. AlbertCharles Chibnall. Yale Univ. Press, NewHaven, Conn., 1964 (reprint of 1939 edi-tion). 322 pp. Illus. Paper, $1.95; cloth,$6.50.The Proteins: Composition, Structure,

and Function. vol. 2. Hans Neurath, Ed.Academic Press, New York, ed. 2, 1964.854 pp. Illus. $26.Radiation Protection. ICRP Publ. No. 4.

Report of Committee 4 (1953-1959) onProtection Against Electromagnetic Radia-tion Above 3 Mev and Electrons, Netl-irons, and Protons. Published for the In-ternational Commission on RadiologicalProtection by Pergamon, London; Mac-millan, New York, 1964. 50 pp. Illus.Paper, $3.25.

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and other foreign chemicals in foods andfeeds. vol. 6. Francis A. Gunther, Ed.Academic Press, New York; Springer,Berlin, 1964. 169 pp. Illus. $6.

Salivary Glands and Their Secretions.Proceedings of a conference (Seattle,Wash.), August 1962. Leo M. Sreebny andJulia Meyer, Eds. Pergamon, London;Macmillan, New York, 1964. 396 pp.Illus. $20.

Sensory Evoked Responses in Man(Ann. N.Y. Acad. Sci. 112, art. 1). HaroldE. Whipple, Ed. New York Acad. ofSciences, New York, 1964. 546 pp. Illus.Paper, $7. 27 papers presented at a con-ference held in February 1963.

Small Animal Anaesthesia. Proceedingsof a symposium (London), July 1963.Oliver Graham-Jones, Ed. Pergamon, Lon-don; Macmillan, New York, 1964. 276 pp.Illus. $12.Le Sodium et la Vie. Alain Reinberg.

Presses Universitaires de France, Paris,1964. 128 pp. Illus. Paper.Structure and Metabolism of Cortico-

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Growth. Erik Zeuthen, Ed. Interscience(Wiley), New York, 1964. xii + 630 pp.Illus. $17.50.A Synopsis of Cardiology. D. Weitz-

man. Wright, Bristol, England; Williamsand Wilkins, Baltimore, Md., 1964. 208pp. Illus. $7.Textbook of Pollen Analysis. Knut

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tale et Animale. P. Boiteau, B. Pasich,and A. Rakoto Ratsimamanga. Gauthier-Villars, Paris, 1964. 1318 pp. Illus. F.310.Water and Solute-Water Interactions. J.

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Mathematics, Physical Sciences,and Engineering

Advances in Organometallic Chemis-try. vol. 1. F. G. A. Stone and RobertWest, Eds. Academic Press, New York,1964. 346 pp. Illus. $11. Six papers:"Diene-iron carbonyl complexes and re-lated species," by R. Pettit and G. F.Emerson; "Reactions of organotin hy-drides with organic compounds," by H. G.Kuivila; "Organic substituted cyclosil-anes," by H. Gilman and G. L. Schwebke;"Fluorocarbon derivatives of metals," byP. M. Treichel and F. G. A. Stone;"Conjugate addition of grignard reagentsto aromatic systems," by R. C. Fuson;"Infrared and raman spectral studies of7r complexes formed between metals andC.H. rings," by H. P. Fritz.

Advances in Petroleum Chemistry andRefining. vol. 8. John J. McKetta, Jr.,Ed. Interscience (Wiley), New York,1964. 540 pp. Illus. $22.50. Seven papers:"Radiation effects on lubricants," by J. G.Carroll and R. 0. Bolt; "Theoretical as-pects and practical implications of staticelectricity in the petroleum industry," byA. Klinkenberg; "Advances in hydro-cracking," by A. Voorhies, Jr., and W. M.Smith; "Dewaxing with urea," by A.Hoppe; "High-temperature technology," byE. B. Gutoff; "The polymethylbenzenes,"by H. E. Cier and H. W. Earhart; and"Engine evaluation of fuels and lubri-cants," by F. T. Finnigan and P. E.Pfeifer.

Air Survey of Sand Deposits by Spec-tral Luminance. Mariya A. Romanova.Translated from the Russian edition(Leningrad, 1962). Consultants Bureau,New York, 1964. 164 pp. Illus. Paper,$22.50.

Analytical and Canonical Formalism inPhysics. Andre Mercier. Dover, NewYork, 1963. 230 pp. Illus. Paper, $1.75.A reprint of the volume published byNorth-Holland, 1959.

Applied Superconductivity. Vernon L.Newhouse. Wiley, New York, 1964. 297pp. Illus. $8.50.Audio and Acoustics. G. A. Briggs and

James Moir. Herman, Stamford, Conn.,1964. 167 pp. Illus. Paper, $2.95.11 SEPTEMBER 1964

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A. Surprised you, didn't it? Youcould have come up with 15 ormore distinct steps-no matterhow you counted. Ours requiresonly half the steps-and time-because of such features as directreading, automatic shlutters andfull range detectors. Makes itmuch easier to train techniciansin its use, too.

Q. Which specifications do you con-sider most important on your in-strument? ..........................................

A. We'll send you complete de-tails on ours-but how are thesefor a start? Resolution 0.2mg,wavelength reproducibility betterthan 0.1m,u, photometric repro-ducibility 0.1% T.

Q. How many accessories are avail-able for extending the application ofthe spectrophotometer you're con-sidering buying? ................

A. We have 9 accessories avail-able now-with 8 more to be an-nounced in the near future.

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The Axiomatic Method. An introduc-tion to mathematical logic. A. H. Light-stone. Prentice-Hall, Englewood Cliffs,N.J., 1964. 256 pp. Illus. $7.95.

Challenging Mathematical Problemswith Elementary Solutions. vol. 1, Comn-binatorial Analysis and Probability The-ory. A. M. Yaglom and I. M. Yaglom.Translated from the Russian edition(Moscow, 1954) by James McCawley,Jr. Revised and edited by Basil Gordon.Holden-Day, San Francisco, Calif., 1964.239 pp. Illus. $5.95.The Chemical Elements in Nature.

F. H. Day. Reinhold, New York, 1964.372 pp. Illus. $9.50.Chemical Principles. P. W. Selwood.

Holt, Rinehart, and Winston, New York,1964. 592 pp. Illus. $8.50.Computer Programming Systems. F.

Peter Fisher and George F. Swindle. Holt,Rinehart, and Winston, New York, 1964.655 pp. Illus. $11.50.

Copolymerization. George E. Ham, Ed.Interscience (Wiley), New York, 1964.955 pp. Illus. $27.50.A Course of Mathematics for Engi-

neers and Scientists. vol. 4. Brian H.Chirgwin and Charles Plumpton. Perga-mon, London; Macmillan, New York,1964. 361 pp. Illus. $5.Electron Density Distribution in Iono-

sphere and Exosphere. Proceedings of theNATO Advanced Study Institute (Skei-kampen, Norway), April 1963. E. Thrane,Ed. North-Holland, Amsterdam; Intersci-ence (Wiley), New York, 1964. 403 pp.Illus. $13.50.Electron Paramagnetic Resonance. S.

A. A'ltshuler and B. M. Kozyrev.Translated from the Russian edition (Mos-cow, 1961) by Scripta Technica. CharlesP. Poole, Jr., Ed. Academic Press, NewYork, 1964. 382 pp. Illus. $13.50.

Elementary Analysis. Richard F. Mc-Coart, Malcolm W. Oliphant, and AnneE. Scheerer. Holden-Day, San Francisco,Calif., 1964. 267 pp. Illus. $7.95.

Elements of General Topology. Sze-Tsen Hu. Holden-Day, San Francisco,Calif., 1964. 224 pp. Illus. $8.75.

Elements of Mathematical Logic. P. S.Novikov. Translated from the Russianedition (Moscow, 1959) by Leo F. Boron.Oliver and Boyd, Edinburgh; Addison-Wesley, Reading, Mass., 1964. 308 pp.Illus. $7.95.Elements of Plasma Physics. Solomon

Gartenhaus. Holt, Rinehart, and Winston,New York, 1964. 208 pp. Illus. $9.50.

Energy Transfer in Gases. Institute ofChemistry (Brussels University), Novem-ber 1962. Interscience, New York; Stoops,Brussels, 1964. 554 pp. Illus. $15. Twelvepapers presented at the Solvay Institute's12th chemistry conference.

Fast Reactions in Solution. E. F. Cal-din. Wiley, New York, 1964. 328 pp.Illus. $7.50.From Vital Force to Structural Formu-

las. 0. Theodor Benfey. Houghton Mifflin,Boston, 1964. 127 pp. Illus. Paper, $1.95.

Functions of a Complex Variable. Andsome of their applications. vol. 1. B. A.Fuchs and B. V. Shabat. Translated fromthe second Russian edition (Moscow,1959) by J. Berry. J. W. Reed, Ed. Perga-mon, London; Addison-Wesley, Reading,Mass., 1964. 447 pp. Illus. $10.

SCIENCE, VOL. 145

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Fundamental Concepts in the Designof Experiments. Charles R. Hicks. Holt,Rinehart, and Winston, New York,1964. 303 pp. Illus. $8.Fundamental Concepts of Mathemat-

ics. Frank L. Harmon and Daniel E.Dupree. Prentice-Hall, Englewood Cliffs,N.J., 1964. 245 pp. Illus. $5.95.Fundamentals of Heat Transfer. Sam-

son Semenovich Kutateladze. Translatedfrom the second Russian edition (Mos-cow, 1962) by Scripta Technica. RobertD. Cess, Ed. Academic Press, New York.1964. 501 pp. Illus. $14.50.

Information and Information Stabilityof Random Variables and Processes.M. S. Pinsker. Translated from the Rus-sian edition (Moscow, 1960) by AmielFeinstein. Holden-Day, San Francisco,Calif., 1964. 255 pp. Illus. $10.95.

Infrared Absorption Spectra, Index for1958-1962. Herbert M. Hershenson. Aca-demic Press, New York, 1964. 173 pp.

$12.Introduction to Elasticity. Gerard Na-

deau. Holt, Rinehart, and Winston, NewYork, 1964. 299 pp. Illus. $7.An Introduction to Electron Spin Res-

onance. Terence L. Squires. AcademicPress, New York, 1964. 140 pp. Illus.$5.50.An Introduction to Electronics. B. V.

Rollin. Oxford Univ. Press, New York,1964. 230 pp. Illus. $4.80.Introduction to Electronics. For stu-

dents of physics and engineering science.Donald M. Hunten. Holt, Rinehart, andWinston, New York, 1964. 383 pp. Illus.$8.Introduction to Inorganic Physical Chem-

istry. Kenneth B. Harvey and Gerald B.Porter. Addison-Wesley, Reading, Mass.,1963. 447 pp. Illus. $9.75.An Introduction to Numerical Linear

Algebra. L. Fox. Oxford Univ. Press,New York, 1964. 307 pp. Illus. $8.

Introduction to Neutron DistributionTheory. L. C. Woods. Methuen, London;Wiley, New York, 1964. 144 pp. Illus.$5.50.

Introduction to Satellite Geodesy. IvanI. Mueller. Ungar, New York, 1964. 427pp. Illus. $15.The Inverse Problem of Scattering The-

ory. Z. S. Agranovich and V. A. Mar-chenko. Translated from the Russianedition by B. D. Seckler. Gordon andBreach, New York, 1964. 305 pp. Illus.$14.50.

Iterative Methods for the Solution ofEquations. J. F. Traub. Prentice-Hall, En-glewood Cliffs, N.J., 1964. 328 pp. Illus.$12.50.The Measurement of Colour. W. D.

Wright. Van Nostrand, Princeton, N.J.,ed. 3, 1964. 301 pp. Illus. $11.Methods of Experimental Physics. vol.

2, Electronic Methlods. E. Bleuler andR. 0. Haxby, Eds. Academic Press, NewYork, 1964. 853 pp. Illus. $24. Twelvesections: Evaluation of Measurement,Sidney Reed; Passive Circuit Elementsand Networks, R. M. Scarlett; VacuumTubes, Edward J. Craig; Gas Tubes, W. J.Kearns and R. P. Welinger; Semicon-ductor Circuit Elements, I. A. Lesk;Rectifiers, Amplifiers, and Oscillators,R. P. Featherstone; W. J. Kearns and

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SCIENCE, VOL. 145

R. P. Wellinger; F. H. Schlereth andH. N. Putschi; Nonlinear Circuits, G. G.Kelley; D. Maeder; H. N. Putschi andF. H. Schlereth; "Servomechanisms, Reg-ulation and Feedback," L. A. Gould;E. F. Buckley; "Measurements," G. G.Kelley; E. A. Goldberg; T. F. Haggai;J. A. Strother; D. Maeder; J. Townsend;P. E. Russell; J. F. Koukol; E. Shotland;Microwaves, R. B. Muchmore; M. Cho-dorow; Miscellaneous Electronic Devices,R. W. Engstrom; R. P. Stone; R. G.Neuhauser; F. J. Friedlaender; and Noisein Electronic Devices, K. M. Van Vliet.Modern Mathematical Analysis. Mur-

ray H. Protter and Charles B. Morrey,Jr. Addison-Wesley, Reading, Mass., 1964.800 pp. Illus. $10.75.

Phase Equilibria in MulticomponentSystems. L. S. Palatnik and A. I. Landau.Translated from the Russian edition(1961) by Scripta Technica. Joseph Joffe,Ed. Holt, Rinehart, and Winston, NewYork, 1964. 464 pp. Illus. $15.

Physical Acoustics. Principles andmethods. vol. 1, pt. A. Warren P. Mason,Ed. Academic Press, New York, 1964.531 pp. Illus. $18.

Piezoelectricity. An introduction tothe theory and applications of electro-mechanical phenomena in crystals. vols.1 and 2. Walter Guyton Cady. Dover,New York, 1964. vol. 1, 443 pp.; vol. 2,432 pp. Illus. Paper, $2.50 each. A re-print of the volume published by Mc-Graw-Hill in 1946.

Principles and Applications of Rheol-ogy. Arnold G. Fredrickson. Prentice-Hall, Englewood Cliffs, N.J., 1964. 336pp. Illus. $13.

Procedures of Modern Network Syn-thesis. William C. Yengst. Macmillan,New York, 1964. 512 pp. Illus. $12.

Qualitative Analysis. Ray U. Brumb-lay. Barnes and Noble, New York, 1964.201 pp. Illus. Paper, $1.50.Quantum Mechanics. H. A. Kramers.

Translated by D. ter Haar. Dover, NewYork, 1964. 512 pp. Illus. Paper, $2.75.Translated from the volume publishedin Amsterdam in 1957.Quantum Mechanics. George L. Trigg.

Van Nostrand, Princeton, N.J., 1964. 407pp. Illus. $9.75.The Science of Sound. John Tyndall.

With an introduction by Alexander Jo-seph. Philosophical Library, New York,1964 (reprint of ed. 3, 1875). 480 pp.Illus. $6.

Sedimentary Manganese Ores. I. M.Varentsov. Translated from the Russianedition by Scripta Technica. D. R. Stew-art, Ed. Elsevier, New York, 1964. 125pp. Illus. $9.

Selected Topics in Nuclear Spectro-scopy. Proceedings of a summer course(Nijenrode Castle, Netherlands), July andAugust 1963. Compiled by B. J. Verhaar.North-Holland, Amsterdam; Interscience(Wiley), New York, 1964. 357 pp. Illus.$12.50.

Selected Works in Organic Chemistry.A. N. Nesmeyanov. Translated from theRussian edition (Moscow, 1959) by Avra-ham Birron and Z. S. Cole. David P.Gelfand, Ed. Pergamon, London, 1963;Macmillan, New York, 1964. 1188 pp.Illus. $30.11 SEPTEMBER 1964

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INDEX OF ADVERTISERS11 September 1964

Ace Glass Inc.....................Alconox, Inc.......................American Edelstaal, Inc.............American Optical Co...............ANS, Inc.........................Applied Physics Corp.........Bausch & Lomb Inc...........1213,Bel Art Products ..................Bishop, J., & Co...................Blickman, S., Inc...................Borden Chemical Co...............Bronwill Scientific ................Brush Instruments .................Buchler Instruments, Inc............Central Scientific, Div. of Cenco Instru-ments Corp......................

Clay-Adams ..Consolidated Electrodynamics.......Cooke, Troughton & Simms, Inc.....Coors Porcelain Co.................E-C Apparatus Corp .. 1233,Edmund Scientific Co...............Falcon Plastics, Div. of B-D Labora-

tories Inc.......................Fisher Scientific Inc...............Forma Scientific Inc...............Geotechnical Corp..................Glas-Col Apparatus Co.............Hacker, William J., & Co., Inc.......Hamilton Co......................Heath Co. ........................

Honeywell Photographic Products,Denver Div.. ..............

Hyland Laboratories ..............Instrumentation Laboratory, Inc......Instruments for Research and IndustryInternational Equipment Co.........Jarrell-Ash Co.....................JEOLCO (U.S.A.), Inc..............Klett Manufacturing Co.............LABCO, Div. of Partsco, Inc........LaPine Scientific Co................Leeds & Northrup Co...............Leitz, E., Inc. .....................London Co........................Matheson Scientific ................Mettler Instrument Corp...........Millipore Filter Corp..............Nalge Co., Inc....................Nesco Instruments, Div. of Datapulse,

Inc. ..........................New Brunswick Scientific Co., Inc....Nuclear-Chicago Corp..............Nuclear Data, Inc..................Ohaus Scale Corp..................Oxford University Press .............Pelmor Laboratories, Inc............Perkin-Elmer Corp. ...........1103,Pharmacia Fine Chemicals Inc.......Phipps & Bird, Inc.................Photovolt Corp. ...................Picker X-Ray Corp.................Pioneer Plastics, Inc................Polaroid Corp.......Professional Tape Co., Inc.Raytheon Co......................Reeve Angel ......................RGI Inc.........................Sage Instruments, Inc...............Schleicher, Carl, & Schuell Co. 1168,Scientific Products, Div. of American

Hospital Supply Corp.............Scientific Industries Inc.............Siemens America Inc...............Sorensen, Div. of Raytheon Co.......Sorvall, Ivan, Inc..................Springer-Verlag New York Inc.......Standard Scientific Supply Corp.....Technical Measurement Corp.......Technicon Instrument Corp..........Tektronic. Inc .....................Thermolyne Corp..................Thermovac Industries Corp..........Tracerlab, Div. of Laboratory for Elec-

tronics, Inc......................U.S. Stoneware ....................Vanguard Instrument Corp..........Varian Associates ..................Will Scientific, Inc..................Wilmot Castle Co..................Year Book Medical Publishers, Inc.Yellow Springs Instrument Co., Inc.Zeiss, Carl, Inc.....................

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