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Win
$1OO for yourself! Just name our new combination hot plate— magnetic stirrer
25210T—WILL combination hoi p l a t e magnetic stirrer. Complete with stirring bar and 6-foot line cord and plug. For 115 volts, AC $115.00
1. Independent controls for stirring or heating or both. 2 . Fast, even heat up to 700°F. T h e r m o s t a t control is con tinuously variable. 3 . Continuously variable belt-driven stirring action gives extremely wide range of stirring speeds—from very gentle to violent agitation. 4 . Sturdy, cast-aluminum housing. Continuous-duty l / l i hp. motor. Ball-bearing mounted driving shaft. Working parts fan-cooled for long life. Permanently pre-lubricated— never needs oiling. 5 . Replaceable ring type 750-watt heater is clamp attached to 8" hot plate aluminum casting. 6 . Smooth, unbroken design and grey hammerloid finish. H a n d s o m e , easy to clean. 7 . Weight: 14>< lbs. Height: 8 % inches. Immediate delivery.
W.
If your suggestion is chosen, the $100 in cash is yours. Enter as many names as you desire, but be sure they are post marked riot later than July 31, 1955.
Will
The decision of the judges will be final, and the earliest postmark wins in case the winning name is duplicated. (Em ployees of the WILL Corporation, its subsidiaries, and its advertising agency are not eligible.) Additional help If you want more information before submitting your name entries, just con tact your nearest WILL warehouse listed below.
CORPORATION
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ROCHESTER 3, Ν. Υ. · ATLANTA 1, GA. · NEW YORK 12, N.Y. · BALTIMORE 24, MD. · BUFFALO 5, Ν. Y. For further information,
22 A
circle number 22 A on Readers' Service Card, page 39 A
W.
HILTY,
Eli
Lilly & Co.,
In
dianapolis, I n d .
HOW TO ENTER
WILL Name Contest, Box 981, Rochester 3, New York
The A n a l y s i s of Drugs and Chemicals.
Norman Evers and Wilfred Smith, xii + 525 pages. Charles Griffin & Co.. Ltd., 42 D r u r v Lane, London W.C.2, England, 1955. 60s. Reviewed bv
These facts will help you:
Just jot down your ideas for a name for this new WILL device and mail them to:
T h e effects of complexes and p H on redox potentials are only implied. Re duction potentials and the a t t e n d a n t sign conventions are used. Some redox reactions are given in several steps which might be confused with reaction mechanisms. Only a few inconsequen tial errors of fact were found. Pertinent references are given. Problems (with answers) follow each chapter b u t do not emphasize t h e the ory. Procedures for the usual gravi metric and volumetric determinations and the analysis of limestone and brass are given. The format and type setting are very good. T h e struc tural organic formulas, however, are very confusing to second-year students. Four-place logarithms a n d the usual tables are in the Appendix. T h e authors present the elements of q u a n t i t a t i v e analysis in a concise yet readable manner for a one-semester course. Additional topics would have to be included for a two-semester course.
This book is a revised edition, originally written by N o r m a n Evers a n d G. D . Elsdon. I t has been com pletely rewritten and revised and fol lows the context of the British Phar macopoeia of 1953 and the British Pharmaceutical Codex of 1949. It reviews, in general, the analytical tests and methods employed in these two official British publications and sets forth alternative methods of analysis which are preferred by the authors. I t is pointed out in this text t h a t ana lysts should not regard this book as a substitute for these official compendia, b u t rather as a supplement to t h e m . T h e work presents m a n y methods of analysis for m a n y compounds in the pharmaceutical industry which do not appear in these official British publi cations. T h e presentation of this ana lytical material could have been sup ported by the addition of several micromethods. The authors chose to omit this phase of analysis b u t did include very useful references, with particular mention of " M e t h o d s of Quantitative Micro Analysis" by R. F . Milton and W. A. Walters. T h e text includes general discussions on physical methods, vol umetric analysis, general methods for the determination of specific constitu ents, analytical methods for inor ganic and organic chemicals, and other sections dealing with natural compounds and their derivatives, fixed oils, fats, waxes, and soaps, volatile oils, ANALYTICAL
CHEMISTRY
