A TEXTBOOK oa ELBMENTARY QUALITATIVE ANALYSIS. Cad I. further expansions might have been made but a t the same time Engelder, Ph.D., Professor of Analytical Chemistry, University he is sure that Professor Norris has favored us with this edition. including enough that is new to hold our interest. of Pittsburgh. Second edition. John Wiley & Sons, Inc., The publishers have done their work acceptably, keeping t o 243 pp. 1 5 X 23 an. $2.25 New York City, 1933. viii their high standards which have been subjects of favorable comnet. The new edition of this well-known manual retains the same ment for many years. Fnrem E. CLARK approach and treatment followed in the earlier edition published EDUC.,5, in 1927. [For review of former edition see J. CI~EM. 9 0 3 4 (July 1928).I The splendid plan of interweaving theory SYNmSES, Volume XIII, W. H. carotherr, Chief, JJohnwiley& Sons, New York City, 1933, vii + with laboratory directions constitutes one of the outstanding merits of the volume. I n Part I, which deals with the theoretical 119 pp, Figs, 15 23 -. basis of analytical chemistry, the discussion of reactions has been Volume thirteen of this useful series of publications contains enlareed and introduced earlv in the book, so as t o brim this ~-~~~ difficzt problem to the attdntion of the student early ih the directions for the preparation of the following substances: course. Oxidation and reduction equations are presented from allantoin, azelaic acid, the azlactone of ar-benzoylamino-@(3,4dimethoxypheny1)-auylic acid, benzalphthalide, &benzoylprothe standpoints of both the "valence-electrode" and "ion-electrade" methods. I n Part 11, which contains the laboratory direc- pionic acid, n-butyl borate, iso-hutyl bromide, butyroin, mtions for cation analysis, the discussions of theprocedures have cblorobenzaldehyde, 14-dibenzoylbutsne, 2.4-dinitrophenylhybeen enlarged, and some of the newer tests have been added, drazine, diphenyl triketone, ethoxyacetic acid and ethyl ethoxyacetate, fluombenzene, fiduorobeuzoic acid, methoxyacetaniparticularly for zinc, magnesium, and sodium. The mechanical aspects af the book are very pleasing. The trile, methyl iodide, a-methyl-a-phenylhydrazine. methyl iso2-nitrofluorene binding is impregnated with pyroxylin t o make i t waterproof. propyi ketone, l-nitro-2-acetylaminonaphthalene, and 2-aminot31orene. I-nitro-2-naphthol N-nitrosomethyianiline, UNIYB.SITY OF I'LINOlS J. H. REEDY URBAN',, ILLINOIS nitrosomethylurethane, perbenzoic acid, o-propriophenol and p-propriophenol, o-toluamide, sym.-tribromobenzene, tricarboE~PERIMENTAL O O R G ~ CHEMISTRY. IC J a m s F. Norris, Pro- methoxymethane, and veratric aldehyde. The appendix contains later references t o preparations in the fessor of Organic Chemistry, Massachusetts Institute of Technology. Third edition. McGraw-Hill Book Co., Inc., New preceding volumes, and additions and corrections to preceding York City, 1933. xiii f 233 pp. 23 Figs. Experiments volumes. The preparations listed ahove are well chosen, and indude arranged under 266 headings. 14 X 20.5 Em. $1.50. a number of important and useful materials. Print, paper, and New editions of Professor Noms' texts are welcome mntinuabinding are of good quality. tions and extensions of popular hooks in the field of chemistry. UNIVBRSITY OR MARYLAND NATHAN L. D n m The work under review is the third edition, earlier editions having COLLBOB PABY.M ~ Y L A N D appeared in 1915 and 1924. I n general the manual is the same as the 1924 edition. One chapter. fourteen pages, and fourteen PHIL% RULE STUDIES. J. E. Wyncfuld Khodes, BSc., A.I.C., paragraph headings have been added. M.I.Min.E., Lecturer in Physical Chemistry, Municipal TechChapter 11, General Processes, of the 1924 edition has been nical College, Blackburn. With an introduction by E. L. arranged into two chapters, the current Chapter I1 retaining the Rhead, Lecturer in Metallurgy and Assaying in the University former title, and Chapter 111receiving the separate title "Hydrand College of Technology. Mauchester. Oxford University carbons of the Methane Series." The author's statement in this Press, New York City, 1933. x 131 pp. One halftone third edition emlains the obiect of certain expansions in Chapter 58 Fies. 12.5 X 18.5 cm.. $2.25. date I1 and elsewhere. "The no& feature of &edition is the i&oProfessor Rhodes' avowed purpose in writing this book was duction of exneriments t o illustrate the use of the more i m ~ o r t a n t t o make the phase rule more attractive and more speedily useful physico-chemical principles which are applied in the preparation to the chemist. To do this, exploration of many interesting byand study of organic compounds." paths must be foregone. However, this is probably advantage"Experiments are described t o illustrate the use of cooling and ous far the novice. T o see practical applications of the phase distillation curves.. . . . ., the factors underlying steam distillarule through a swarm of examples, exceptions, etc., is not easy, tion, and the use of the latter in the separation of substances and but is usually necessary t o a sustained i?t&st. in the determination of molecular weights. A simplified method To be frank, the reviewer was sceptical that the subject could of determining molecular weights by the lowering i f the freezing be treated successfully from this angle. This doubt was entirely point of a solvent is also described. removed after careful reading. Professor Rhades has produced a "Two quantitative methods which are important in the identi- splendid little book that is worthy of consideration by any teacher fication of organic compounds have been introduced, namely, the of the phase rule. I n it are all the essentials and sufficient pracdetermination of the saponification equivalent of esters and the tical applications t o whet the appetite for a more detailed h o w l determination of the neutralization equlvalent,of acids.'' edge of the subject. "Phase Rule Studies" 'cannot, by any Relatively few new experiments dealing with the synthesis of stretch of the imagination, be considered a reference work. compounds have been added. I n this connection m e ~ o should n Nevertheless, one who studies i t carefully will certainly h o w he made of "the preparation of ethyl acetate in the presence of "what i t is all about" and will acquire some ability in the use of water t o illustrate the use of ternanr mixtures . .. . ." Primu- phase theory and diagrams. line has been given more prominence in that its preparation iq Literature references are not abundant but are sufficient for carefully described (p. 2\11). Especially to bc commended is the a work of this kind. Especially commendable is the informal, preparation of o-hmroylbenzoic acid (p. 180) with the application friendly tone of the book. One cannot help but feel that the of its conversion into anthraquinone. author has a sympathetic understanding of a student's difficulty Improvements have been made in a few type synthew, as for with the subject and is sparing no effort t o make i t dear and logiexample, acetaldehyde (p. 93), aldehyde ammonia (p. 94). acet- cal to him. The frontispiece is a very beautiful photomicroamide (p. loo), succinic anhydride (p. 84). triphenylchloro- graph of augite granophyre. The description awmpanSing methane (p. 157), triphenylmethane (p. 159). methyl orange (p. i t almost camoels one t o read on and discover how the phase 198). fn. 169). -~~ , .and ~ diazoaminobenzene rule maker possible the interpretation of Nature's hook. The reviewer assumes that the author continues to be guided For these reasons, "Pharc Rule Studics" is highly recommended by his former teacher. Ira Remsen, whose injunction was not to wherev~ra n unusually good clcmentaty treatment is required. be too loquacious, in that he has not sought uppo~unityto intro. duce a larger number of preparations. The reviewer wishes that
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