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THE CREATIONOF THE UNIVERSE

By GEORGE GAMOW

Now for the first time in a book for science-minded people,Dr. Gamow discusses the origins of galaxies, stars and planetsin the light of known nuclear reactions. In a witty, readilyunderstood manner, he traces the expansion of the universethrough three billion years of gas-to-liquid and liquid-to-solid evolution. To support his interesting conclusions andcontentions, he draws upon geology, astronomy and the new-

est concepts in the fields of nuclear and atornic reactions.

EXPLORATIONSIN SCIENCE

By WAIDEMAR KAEMPFFERT

This is a fascinating non-technical exposition of the scien-tific wonders that have made startling headlines in recentyears, and the dramatic stories behind them. Intended as a"guided tour" for the intelligent reader who wants to keepabreast of today's increasingly important and complex scien-tific developments, this book deals with current problemssuch as: the use of atomic energy in war and peace, the mys-tery zone of supersonic speeds, the enigma of cancer, thecyclopean eye of Palomar, and even the prospects of made-to-order weather. The author is a former Editor of ScientificAmerican and is currently the Science and EngineeringEditor of the New York Times.Combined rWtail price $7.2S BOTH FREE to new members

BENEFITS YOU ENJOY AS A

THIS NEW KIND OF BOOK CLUB is for people inter-ested in Science ... who want to keep abreast of scientificdiscoveries, inventions and developments of all kinds, theworld over.Each month the Club's editors select an outstanding book.

This and other significant works in the same field are de-scribed in The Science Report which you receive free.On joining you receive Explorations in Science and The

Creation of the Universe FREE with your first selection,Rockets, Missiles, and Space Travel. For every four addi-tional selections you accept, you receive another valuableBonus Book FREE.You do not have to accept every selection- as few as four

a year fulfills your sole membership obligation. You acceptonly the books you want, and pay only the member's specialreduced price, plus a small fixed omailing charge, after youhave received them.

It costs nothing to join and you may cancel your member-ship at any time after accepting four selections. Send nomoney. Just mail coupon now to: Science Book Club, Dept.2015, 11 East 36th Street, New York 16, N.Y.

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ROCKETS, MISSILESand SPACE TRAVEL

By WILLY LEYI Just how far has Science advanced to-ward making interplanetary space travela reality? Here are facts much strangerand more exciting than any fiction everwritten-and theories that may be estab-lished facts much sooner than we think.The question is no longer whether spacetravel theory is serious, or correct. It isnow simply a matter of how quickly en-gineering practice can catch up with ex-isting theoryl Illustrated with many pho-tos, drawings and charts.

Retail price $5.95To members, only $4.75

SCIENCE BOOK CLUB, Inc., Dept. 20151 1 East 36th St., New York 16, N. Y.Please enroll me as a member. I am to receive FREE, as a giftupon joining, Explorations in Science and The Creation of theUniverse. With them, send as my first selection, Rockets, Mis-siles and Space Travel, at the special member's reduced price ofonly $4.75, plus 25c for postage and packing. For each fouradditional selections I accept, I am to receive a valuable BonusBook FREE. I am also to receive the Club's Science Reporteach month free. My only obligation is to accept as few as fourClub selections the first year I am a member.

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SPECIAL RESEARCHBIOCHEMICALS

Ketoglutaric Acid, alphad Lactic Acid CP. (Sodium Salt)

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Lauric AcidLauroyl Choline Chloride

MalonitrileDL Mandelic Acid

Methyl CholanthreneMyristol Choline Chloride

Ninhydrinp Nitrophenyl Phosphosphate

p NitrophenolOleic Acid (Tech.) 93%

Palmitic AcidPara-Aminosalicylic acid

Phytic AcidProtanine Sulfate

Pyridine-3-Sulfonic AcidPyruvic Acid (M.P. 6° + C.)

SalmineSaponin (Purified)

Sodium Azide (Pract.)Sodium Carboxymethylcellulose

(High Viscosity)Sodium 2,6, Dichlorophenolindophenol

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TrigonellineTyramine Hydrochloride

See Science Sept. 25 issuefor additional listings

A READY REFERENCE), _____That will Save Time for You

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2SCIENCE, Vol. 118

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Finest Japanese Optics and WorkmanshipBuilt to our specifications for a life-time of excellent performance. Pricedfar below comparable values. Eqtualto the world's finest optical instru-ments.Greenough Type Stereo-Microscopes(Model UGA)Used by biological laboratory andstudents, mineralogical labs., andfactories. Excellent for dissectingand mineralogical work.Includes three paired wide-angle

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new book announcementsF ~~~~~McGRAW-HILL BOOK COMPANY

ELECTRICITY AND MAGNETISMBy EDSON R. PECK, Northwestern University. 470 pages, $7.50

This intermediate text provides an unusually care'7ul, clear, and critical discussion of the underlyingprinciples of electromagnetism, including both field and circuit theory, and goes as far as simple ap-plications of the Maxwell equations to electromagnztic waves and radiations. A background in generalphysics and elementary calculus is assumed. Although primarily theoretical, the book maintains con-tact with the laboratory by means of numerous practical problems.

EXPERIMENTAL COLLEGE PHYSICS, New Third EditionBy MARSH W. WHITE, and KENNETH V. MANNING, The Pennsylvania State College. Third Edi-tion. 347 pages, $5.00

This book is basically a laboratory manual for experiments in various courses in general physics. The45 chapters include the background theory, procedure, review questions, and thought-provoking ques-tions and problems for 76 experiments. The topics covered include all of those usually included inlaboratory courses in general college physics. More than a set of directions for performing experi-ments, this book gives a concise, but complete, treatment of the pertinent basic theory. The book hasbeen completely revised, many chapters rewritten and improved experiments included. All of the il-lustrations have been redone to produce improved readability and more problems have been included.

ELEMENTARY QUANTITATIVE ANALYSISBy RALPH L. VAN PEURSEM and HOMER C. IMES, Rochester Institute of Technology. 383 pages,$4.50

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EXPERIMENTS, THEORIES, AND PROBLEMS IN GENERAL CHEMISTRYBy H. W. STONE and JAMES D. MCCULLOUGH, University of California, Los Angeles. Interna-tional Chemical Series. 352 pages, $6.00

Designed to present the three important aspects (experiments, theories, and problems) of beginningcollege chemistry in a unified and rigorous treatm2nt, this book brings the student the essence of themost successful procedures. Going far beyond the scope of the usual manual, it serves as a text whichpresents all the essentials of a first semester course.

Send for copies on approval

V'SCIENCE, Vol. 118

McGRAW-HILL BOOK COMPANY330 West 42nd Street * New York 36, N. Y.

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