Chemistry in Everyday Life. Enrsax, DAVIS, Each chapter has its quota of p r ~ b l e m s - ~ ~ t BOYNTON, AND DOWNBY. Lyons and C?atoo many and not too difficult for beginners, who han,Chicago.1924. riii +667 +alirpp. 13.5 are also -isted by being shown the equations X 18.5 em. $1.76 ~ o s t w i d . involved in the ~roblem. The reviewer believes that the hook, generally, T h i t e r t is by no means a small one as one shows the "."a1 earmark. of being written by can judge by the number of the p a p a , nor is it several authors, indicated by an apparent lack brief in ~ubstanee. I t is one of the most compreof coherence in the text taken as a whole and hensive text* t h a t has come t o the attention of more apparently by t h r lack of personality in its the reviewer Because of its heavily sired paper. style. The reviewer har in mind a certain other the shape of the book, the plain appearance of chemistry text where the phra.eology and diction the tert, the fint impression is likely not to he of the single author amount almost to a charm, one of approval: but after noting how flat the leading t o phenomenal popularity for the text. book opens and how easily the text reads b c AS to illustrations in the present text they cau.e of the good type and the simple arrangement, and more especially after careful scrutiny or the content., one is strained to classify it . among the more successful of recent chemistry a rather motley appearance as the oases . . are texts. There is very little of e l e m e n t w chemscanned. istry that the amthorn have omitted. It is thought that perhap. t m great efforthas Many of the modern chemirtries are written been made to pleare chemistry teachers throughwith the idea of furnishing a ready means for out the land and to combine an elementam t e x t parning college entrance examinations. The with a general treatise oo chemistry. However, means for this are furnished in the first 393 pages the book indicates a great amount of labor and of the text. but the hook contains other instructhought and care in irn preparation and the an. tive material on the chemistry of everyday life. thors are t o b~ congratulated on the produit, but The reledion of the material of the text ar well a necond and revised edition ought to make a as its arrangement seems to have been based on more serviceable text. received from chemi.try teachers through1. HOWARD G~*H*M out the United States. There are 218 iilus~ations.a complete index. Applied Chemistry. A Laboraton, Manual. and 65 tables. Special topies number 269 pager. E w ~ a u .Mn'm, A N D BOYXION. Lyons and Chemical equations are used beginning with Carnahan. Chicago. 1924. 115 experiments. the first chapter but the method of writing 19 X 26.5 em. $140 postpaid, equations is not explained until page 140 is reached. The wisdom of deferring the explanaThe author. ray "that the order of experim a t 4 follows eloselv the arrangement of the tion of equation writing so long is questionable. t e r t by the same author9 hut that the erperiThe amangemmt of the index whereby topic. are listed by section numbers rather than by m a t s are of such a nature that t h e y may be pages is annoying. Also the fact that uniformly ured with any well-constructed tert." The exlarge type is not used for all sections, leads t o a periments fall into four parts. 47 of general insearch over the o w-e for the smaller orinted seeoreaoie. 52 of food elioeriment~intended ehieav tion number. Look up "molecular weights" for for girls of domestic science courses. 14 experiments of a more technical nature than the first instance. I t is found undrr section 56-this number printed in m a l l tvpe and followed by the 47, and finally a brief system of inorganic analyword "problems." So ik is with "Avogadro's sis. This book of laboratory experiments is a vary Hypothesis" and other topic.. The following section numbers show how scattered the very handy one. By mesnr of a cord and snaps it eno meager material en some of the fundamatal be opened Eat or closed so an t o ho!d all pages laws and hypotheses of chemistry is: 15. 56, 191. securely. 353. The authors state that el1 the text need not The experiments are of the usual type found in lrborataiy manuals of chemistry but ao attempt be studied by the student indicating perhaps that there is some irrelevant matter, but the reviewer has heen made to direct the pupil so ss n o t to believes that a closer following of the authors of require for him too much superuirion by the some of the recent chemical texts as t o their teacher. All nseseary drawings are made for the pupil and typical equations are written, but content on law and theory. would be far more blank spaces are left t o be filled with answers and satisfactory.
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equations The idea in t o have the teacher grade the pupil on the actual chemistry content of the written report. and not on the quality of his drawings nor on the nearness of arrangement, ete. The first pages of the manual have Lists of the general directions for treatment of accident eases, and lists of apparatus illurtratted with excell;ot drawings. These are ail good features. ~ l t o g e t h e rit is a very commendable eombination of manoal and note-book and ought to render extensive service in the schools.
Lecture and Laboratem Experiments in Phydcel Chemistry. HamY S. V A N KroosrBR, Ph.D. second Edition of Lectore Demonstrations in Physical Chemistry. The Chemical Pu~lishing Co., Baston,Pa., 1925. x 274pp.,91 figures. 13 x 19 em. 63.00.
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~ r ~ f e s svan o r Klooster has brought together in this book three hundred and sixty experiments in general physical chemistry most of them expressly adapted for use in lecture demonstrationo. The book is isued as the second edition of the "Lecture Demonstration in Physical chemistry." "The chapters on catalmii. deetra"hemistry and ionic theory, solubility, colloid chemistry, and adsorption have been enlawed, and two new chapters dealing with radio-activity and miscellnneovs experiment3 added. About one hundred mew experiment3 have been described." (Preface.) The experiment. cover most of the s u b j s t s commonly inclvded in elementary physical chemistry, as well as many of the topies that may well be used in eonneEtian with c o m e s in genera1 chemistry. The directions are given with =urnrient detail to be really u d u l , and the numerous to original sources arc a valuable feature of the work, an anyone who has had mveh experience in trying to demonstrate experiment3 from second- and third-hand descriptions will agree. The author does well to emphasize the importance of Lecture demonstrations in physical ehemistry, and it is indeed strikiog, as he suggests, to note how large a proportion of the experiments is due to the famous teachers of the subject. The book under consideration should be a great aid in .timulating further efforts to improve the teaching of physical chemistry. Because of the increasing prominence of physical chemistry in general-chemistry courses, the book should be of value also to teachers of such cIas3es.
Thi. little book is evidently written for Dr. Hendel's cl-es in Hunter Collese. I t contains eleven chapters; Weishing, Simple Gravimetric Principles, General Theory of Gravimetric Procedures. Practical Analysis of a Dolomitic Roek, Volumetric Methods and Apparatus, Alkalimetry and Addimetry. Oxidation and Reduction Methods. Iadimetry. Electric Methods, Errors. and the Precision of Analytical Results The selection of samples discussed is conventional. As a text-book, it could well be supplemented by a ryrtematie course of Lectures. The last chapter of the book on errors and the precision of nnalytieal results. though brief, is t o be commended. I t is t o be hoped that in later editions, the book may be considerably expanded. Vtnos L m n m How to Teach General Science;Notea and Suggestions of Practical Aid to Every Sci&ce Teacher. 1. 0. P a r w ~ Professor , of Science Education in the wiseonsin state Normal School a t Osbkorh. Caalc-Pierce Press, Oshkosh. Wir., 1925. riii 194 pp. 13 X 19 em. $2.00.
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Thi. book wan brought t o print after having been taught in manuscript form t o more than two
hundred teachers. one cannot read it without noting a refreshing directness and eonclena. of style, and a richnus of suggestion that ir inrpiring. The book ir closely written and splendidly organized, and equipped for the utmost practical aid of any general science teacher from youngest to oldest with abundant up-to-the-minute topic references. The author briefly surveys the development or schools and teachins to clear sway . any . eonfurion as t o the real place of general science in seeoodary e d u ~ a t i ~ oThen . follows a juntification of his theories in citations from the findings of modern educational poyehology and in theeonelusions of the N. E. A. special committees an to broad aim=. which the author simplifies and sum* up for genera; science teaching as: "In the grades, t o furnish experience. . . . s.tools for later understanding . . . I n the Junior High School, to dircover dominating interests. . . . . . I n the Senior High School t o carry his dominant interests to intellectval independence:' General science should not be thought of aa a reservoir of unlimited facts of "Science" (and everything else), but as a fund of praefieal appealing matter, rigidly selected from the stand-point of accepted aim8 t o be the vehicle for teaching some fundamental principles of science, habits of accuracy and ob.ervation, and far training in "how t o study and how t o learn." G. H. C A ~ L B D O B Coreideation of legitimate svbjcct~matter leads to the conclusion that "an ideal text-bwk for universal use is imposriblc:" but the scheme Qoantitsthe bnalmis. J m s s M. HelroRL. Assistant Pmfesror of Chemistry. Hunter Colle~e for three levels of subject-matter seems t o o U a a much-needed solution of this want. The chapof the c i t y of New Yrnk, oinn & company. ter on general science references is complete, and Boston, Mas.. 1925. vi 134 pp.. 13 X 19 "Special Teaching Aids" appears to be a veritable em., 51.40.
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