38 A
ANALYTICAL
CHEMISTRY
Ai eau ScUedfide
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BACK ISSUE PRICES Effective June I, 1949, the following schedule of prices for single copies and complete volumes of American.Chemical Society journals will become effective:
For the
Precision and Simplicity
RATES FOR SINGLE COPIES O F CURRENT ISSUES A N D BACK NUMBERS, EFFECTIVE JUNE 1 , 1949
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Current Year Bade Years NonNon- Foreign Canadian Journal Member Member Member Member Postas* Pottage ANALYTICAL CHEMISTRY S0.40 S0.50 $0.60 $0.75 $0.15 10.05 Analytical Edition (l*EC) Volumes 1-4 1.60 2.00 .15 .05 Volumes 5-8 1.00 1.25 .15 .05 Volume 9 et seq .60 .75 .15 .05 CHEMICAL ABSTRACTS Numbers 1-22, each .60 .75 1.00 1.25 .15 .05 Numbers 23 and 24, each 2.00 2.50 2.40* 3.00* .45 .15 CHEMICAL A N D ENGINEERING NEWS
15
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1.00
.15
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1.00
1.25
.15
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INDUSTRIAL A N D ENGINEERING CHEMISTRY (Industrial Edition) J O U R N A L O F THE AMERICAN CHEMICAL SOCIETY
Designed to give chemists full advantage of spectrochemical analysis without the fragility and complica tions of prism instruments. Coleman Spectrophotom eters utilize a precision galvanometer to insure maxi mum photometric precision in the simplest possible manner, and eliminate the distorted spectrum and as sorted mechanical complexities of prisms by the exclu sive use of Wood's echelette diffraction gratings. Because these gratings produce a NORMAL spectrum Coleman Spectrophotometers automatically maintain a constant band pass, it is unnecessary to calculate and readjust the slit width at each change of wave length. SPECTROPHOTOMETERS FOR CHEMISTS, these in struments assure in practice the exact and dependable performance that ONLY A GRATING CAN GIVE. Coleman Spectrophotometers are available in two models— Model 14, U n i v e r s a l S p e c t r o p h o t o m e t e r . A multipurpose instrument foi Spectrochemistry, Photofluorometry, Nephelometry, and for Spectro and Electro titrations. With constant voltage trans former. E a c h $540.00 M o d e l 6 A , Junior S p e c t r o p h o t o m e t e r . For rapid, routine analysis and control—and for research where only spectrochemistry is involved. With constant voltage transformer. E a c h . . . $385.00 Write for Descriptive
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RATES FOR V O L U M E S OF BACK NUMBERS NonForeign Canadian Member Member- Postage Postage A N A L Y T I C A L CHEMISTRY (formerly Analytical Edition) CHEMICAL ABSTRACTS C H E M I C A L A N D ENGINEERING NEWS (1-24) CHEMICAL A N D ENGINEERING NEWS (25 et seq.) INDUSTRIAL A N D ENGINEERING CHEMISTRY J O U R N A L O F THE A M E R I C A N C H E M I C A L SOCIETY
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This revision is necessary not only because of increased handling and storage charges, which have been in effect for several months, but also because of the necessity for reprinting certain numbers and volumes which are no longer available otherwise. Orders placed before June 1 which are delayed in fulfillment because of foreign exchange difficulties or temporary stock depletion will be filled at current rates.
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A M E R I C A N C H E M I C A L SOCIETY
STANDARD SCIENTIFIC
80
* Except Subject Index, Volume 40. This is in two parts and each part sells for $2.00. Part 1 contains Subject Index. Part 2 contains Formula Index, Numerical Patent Index, and List of Periodicals Abstracted.
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