1204
JOORNAI.
OII CHEMICAL EDUCATION
of p r d u r e io metal analysi.. in t h a t a single sample k taken lor aoalyrir, and largely bv moans of p r ~ t i p i t ~ t i omethods n the repantion and d c fccfioo 01 anions are made." A number of tables a t the end of this section bring together in tabvlar 1orm the methods of procedure for the analysis of the anions and cations commonly studied in qvalitatiae analysis. The a . o. ~ e n d i xcontains several tables and directians for the preparation of the various solutions rnrploycd in a n ~ l y 4 s If i< reconlntrndrcl that the t w ~ ~ I u l i ~have n s a definite conccnlratmn so that the student ma. form nn ldca of the rdntive amouots present in his unknown. Only the terts aetvally used in the nnalytieal procedure are atudiedin order not to burden the student with material far whieh he has noimmediate use. The book contains a few typographical errors which should not be confusing. The numerous cross references are somewhat difficult t o locate a t first, but one won becomes aceustomed t o them. Altogether, i t should prove t o be a aery satirlaetow text for most elarses. D. C. LrcnrswwnL~sn General Chemistry. The Miner Serietl. BY W. H. CLARK. Ph.D.. Dean, School of Industrial Arts and Sciences. College of Industrial Arts. Terns; Fazn H. C u n a e ~ s ,Ph.D.. Dean, WestIllinois State Teacher. College; HARRISONHAL% Ph.D., Head of Department of Chemirtry, University of Arkamas; Pam H. Hem=, Ph.D., Professor of Chem1.LBWIS. i s m . University of Florida; LBLAND PLD., professor of Chemistry, norida State College for Women; GBORCB W. Mvmml a m , M.S., Professor of Chemistry, Hamline University: E. A. VanLGUwrL% Ph.D.. Professor of Chemistry, Dickiooon College; and Orro 0. W ~ r r s ,M.S., Head of the Department of Chemistry, Simmons University. The Miner Publishing Company. Macomb, 665 pp. 124 figs., Illinois, 1926. xiii 14 X 21.5 cm. Price $3.50 postpaid. AS stated by the authors, this book is intended for college and university students and represents the combined e5of experienced teachers of chemistry. The subject-matter is taken up in fifty well-selected chapters and is treated in modern fashion. Most of the chapters are followed by pertinent study questions and in a few instances references for r~pplementaryreading are given. There i n considerable repetition, although in most inStanCEs where a subject ir repeated i t is a p proached from a different viewpoint and by a different author. Associated material bas not been a. thorouahb . . indicated b s references as it should be. Many teachers will be particularly pleased with the discussion of valenee and structural formulas of inorwnie . comoounds as oresented in chapter seven. very little space is devoted t o the dimasion 01
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OCTOBER.1926
atomic structure and one lo surprised t o find the Theory of Lewis and Langmvir called the "Louis and Lansmuyr theory.'' This, no doubt, is a printer's error, but many sections of the book seem t o have beem printed without being subjected to careful prod-reading. Many of the cuts have been made from free-hand drawings and although they show what is intended, they add to ooe'r feeling that the book. as it stands, represents an unfinished piece of work. Much .-ace has been used in reproducing photographs of minerals and mineral products and there is scarcely an instance io which such cuts show anything of value. The index, a maat valuable part of any serviceable text-book. is wholly inadequate. T h e paper and binding are not first I Until this book har been subjected to considerable editmial and mechanical refinement, it cannot be expected to assume a place of importance among the text-books of geoernl chemistry. A. E. McKnmm
Inorganis Quantitative Chemical Analysis. W n ED W. SCOTT,Sc.D. The Chemical Publishing Co.. Esstan. Pennsylvania. 1926. vi 178 PP. 11 figures. 15 X 23 cm.
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$2.50. The book is designated by the author:
"A
Labmatory Manual for Colleges." I t is planned t o furnish direction. fm the proeedurer studied during a first-year course in qvnntitatise analgsir. The eutomarJ, grouping of the experiments ha* been followed. Gravimetric methods are illustrated by 23 determinations, loeluding representative elcetrolytie determinations. Volumetric procedures are illustrated by 29 d e t e r minations and are subdivided in the customary manner to include procedures bared oo neutralization, oxidation, iodimetry, and colorimetry. Three proeeduren illustrate the deter. minatian of minute amounts of rubntanees. Interspersed throughout the text matfevare lists of carefully prepared questions and problems. "The methods selected are standard proeedurea having the advantages of amuracy coupled with rapidity." The first experiments deal with simple determinations in which interfering rubstances are absent. I n later experiments. separations and more difficult manipulations are required. There are no complete ore or rock analyrea described. I n eonoeetion with the determination of various of the elementary substaoces, intmdudory notes state the importance of the substance as a reason for its determination. The principle back of the determination is given brieny and references for the further study of the theoretical principles are listed. I n the gravimetric methods. the authm 8i-9 the aolubilit~of various e a m p a n d s of the subrfanee being determined, m that the ntudent may understand the reason for the separation in the form of one of its compounds rather than another. This manual furnilheil sufficient material for
