40 A
ANALYTICAL
CHEMISTRY
PETERSON ··
'600 spectra . . . use
ULTRAVIOLET SPECTRA of AROMATIC COMPOUNDS By ROBERT A. FRIEDEL and MILTON ORCHIN, both at the Bureau of Mines
Organized for easy reference and easy application Emphasizing polynuclear hydrocarbons, this new and thorough book also includes heterocyclic compounds and polynuclear compounds w i t h functienal groups. Each of t h e spectra is labeled w i t h the name and complete structural formula of the compound and t h e solvent employed. Source of the material, literature reference, and instrument are also indicated if known. Spectra are printed on one side of the page; pages are looseleaf punched and the book is spiral bound. Approximately 600 ultraviolet spectra are given, plus about 40 pages of very simply-written text t h a t treats applications. 1951 708 pages $10.00 Write today for your approval copy. Please include name, address and firm's name.
JOHN WILEY & SONS, INC., Dept. AC-1151 440 Fourth Ave., New York 16, N. Y.
From coast to coast, leading laboratories recognize Peterson's reputation for quality furniture for laboratory, and library. Whatever your requirements may be, call on Peterson's experts for an economical solution to your problems . . . No obligation is incurred. Distributors located throughout the United States
LEONARD P E T E R S O N&CO.INC. 1130 FULLERTON AVENUE
CHICAGO 14. ILLINOIS
EBERBACH LABORATORY SHAKERS The utility box carrier on the variable speed power unit shown here is a most versatile laboratory shaker. Various size and shape containers (even a 5 gallon bottle as illustrated) are held securely by the rubber-covered sliding bar clamps. Speeds between 100 and 300 oscillations per minute. Interchangeable carriers for flasks are available. Durably built and attractively finished, Eberbach laboratory shakers are quality machines. Our Bulletin 100-D illustrates and describes the entire line of shakers in detail. Write for a copy today.
SCIEIÏÏIFIC inSÏMMIïïS
Eberbach Ann AftBO,vmicn.
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