Recent Books (I!I1
Chemical Synthesis. By Haany HHPWORTA. monium poly=dfide is used io separating the D. van Noptrand Company, New York, 1924. copper and tin subgroups, and sodivm peroxide 243 pages. $6.50. for the reparation of the aluminium and iron submoupr. As an alternative procedure, ao innoDr. Hepworth's book presents an admirable in ,,ti,, is found in the diseursion of the achievements of the organic of oralic and hydrogen peroxide io separating chemist in the synthesis of naturally occurring tin from md antimony. A new procedure c o m ~ o u n d ~ I. t is a book which can be read k inserted in the iron-group for the pur. with profit by anyone familiar with, and interof destroying oxa~atcs. ~ ~ t pro. ~ e.ted in, organic chemistry. cedures are given for the separation of calcium "Chemical Synthesi." might well be used as a ,d the first depending upon hand book in a graduate covrse in special topics sepamtion of strontium as sulfate, and the upon the precipitation of ca~ci,,m fcrroeyan;de. in organic chemistry. Tho* who believe that the reactions of organic chemistry can bert be . - ~ h ~ %"heme for the detection of the presented t o advanced studento by means of ,ions is, ~ i t "=rrain h changes, the one worked examples of their application will find this book in the . m by thin writer and r veritable gold mine of valuable inlormation. edition of W,A, Noyes 'Qualitative AnalmiJ.,~. The physical make-up of the hook, with the of instruetion first, for adeexception of a few details. is emellent. Them quate preliminary on the members of a are few typographical errom in some of the gmup, ~ i t note. h as ~ O I I by O ~a ~ ~ structural formulile, which might lead the inf. exerdsesfor use in quizroom work, T~~ experienced into diffiedty. Unfortunately, the ana~yris of the group followr, with additional book is not bound as st-gly on the student works might be de,t. sired. It ir t o be hoped that publirhers will more through the book withovt .kipping until the generally be brought t o a realization of the decomplete analysis i3 taken up, T~~~is a peda. sirability of strong binding, so that our technical g,,gical advantage, books may withstand ordinary usage. The procedures are dearly given and the JOHN H. G*=DNBR noteO mention of numerous which every teacher knows but few texts recognize. ~ l ~ ~ ~ ~l i ~t ~~ at ~hl ~ ~J,i~H. ~ . ThTovghout ~ ~ are improvements ~ thet book there in ~ RE^^^. M ~ G ~ ~ ~ ~~~k . H ~ co,, I I N~~ y o r ~ , the small points of technique, and a 6ne emphasis
.
me
+ 137 pp.
Price $1.50.
"This hook i* an attempt t o pmt in printed form the system of laboratory and quiz r w m instmction that has been developed during recent years in the elementsry eovrses in Qualitative Analysis a t the Univmity of Illinois. I t presumes that the student has had the equivalent
upon dCtails. There is no attempt, however, t o distinguish p o d i l i r r of the eon.tituents, other than trace.. The reviewer npted about fifteen typographicai errors. The statements that cobaltie hydroxide may remain in the iron group as a residue insoluble in nitric acid (like manganese, p. 49), and that fusion with potassium pyrosulfate converts
the student t o know a t all times exactly what he in doing. The endeavor has been made to put nothing in the book that the elementary student miaht mot be expected t o nodentand" (preface). The praecdures for the detection of cations are, for the most part, the customary ones. Am-
of its kind, for uae with first-year students. Personally, the reviewer believes that more can be accomplirhed if qnalitative analyrir is portponed until a later stage in the student's carerr, whcn a more precise type of procedure may be employed. G. H. CARTLHDGS
1924.
liis
..
.. .
~
~
~
t
i
~
~
