Ν ew American Chemical Society Monographs

Its History, Geology, Ore-Dressing, Metallurgy, Chemistry, Analysis, Applications, and Economics

By K„ C. LI, KJB., A.B.S.M. Governor, Commodity Exchange, Hew Voric

Chief Engineer, Tan&xteno Krtexicano, S .A. , Mexico Chief Engineer, National Reconditioning Company, Inc., New York Chairman of the Bv ntd, Wah Chens Trading Corporation, New Vork

and CHUNS YU WAfcf©, M. INST. M.M. University Medallist, Columbia University

Technical Expert, Mlnhriry of Economic Affairs, China Director of Research, National Reconditioning Company, inc.. New Yo/s

THe increasing importance of tungsten in the metal­lurgical and electronic industries has evoked a need for a conrprehensive treatment of its geology, processing and uses:. This volume has been designed to meet that need. "Written by two outstanding experts in the field, one of wlio-m is consultant on tungsten to the U. S. Government, it psresents detailed discussions of the occurrence, com­position and preparation of tungsten ores in all parts of the world, whicli will b e of immediate and permanent valine to geologists, mining engineers and metallurgists in general. This material is accompanied by maps and other

illustrations, including ikies striking color reproductions of various types of tungsten ores. The use3 of tungsten in high-speed steels, ferrous and nonfarrous alloys, wire, dies and drill bits and electrical equipment are described, and chapters are also devoted to the metallurgy, chemistry and economic position of tungsten. In all cases the pres­entation is precise, accurate and thorough-going. This volume should be in the possession of all chemists, metal­lurgists, mineralogists, and geologists, and any others concerned with the uses or properties of this strategically important metal.

325 Pages A. C. S. Monograph No. 94 Illustrated $7.00

V E G E T A B L E F A T S A N D O I L S The Chemistry, Production and Utilization of Vegetable Fats

and Oils for Edible, Medicinal and Technical Purposes By GEORGE S. JAMIES0N

Chemist In charge of O i l , Fat and Wax Laboratory, Bureau of Chemistry, United States Department of Agriculture

Second Edition Packed with vital, detailed information about these

critTcally important materials, the revised edition of this nomograph has been thoroughly rewritten and brought up t o date. One of its many valuable features is the inclu­sion, of descriptive data resulting from the author's recent trip to South America as a member of a commission to investigate agricultural products there.

Tube book contains selected data and other facts on the sources of these products, their characteristics, composition, properties and uses. Commercial and laboratory processes

for the preparation and extraction of fats and oils from oleaginous seeds, clarification, bleaching, deodorization, hydrogénation, refining and other treatments in special c^ies are discussed. Attention has been paid to grades and sp;>rincat£on8 covering both crude and refined oils.

Msthcds are given in detail for the sampling and exami -nation of seeds, oils, fats, press cake and meals as well as tests for evaluation purposes and for the detection of adul­terants. All this information is exhaustively documented.

530 Pages A. C. S. Monograph No. 58

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REINHOLD PUBLISHING CORPORATION

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