Elements of optical mineralogy. An introduction to microscopic peterography. By N. H. and A. N. Winchell. Entirely reritten and much enlarged by A. N. Winehell. Second edition. Part II. Description of minerals. Pp. xvi+424. New York: J. Wiley & Sons, Inc.; London: Chapman & Hall, Ltd., 1927. Price 27s 6d
✍ Scribed by Greenwood, H. W.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1928
- Weight
- 140 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0368-4075
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✦ Synopsis
l!O proilucc within a rcasoiinblc conipnss n scietit,ific rcvicw in ~vhich tlic chemistry of ccllulosr, is plnccil in proper pcrspcctivc inust nlwiiys bc n foriiiidablc undertnking, and a t thc prcscnt t,iiiic, ~vhcu rcsenrch o t t nll types of car1)oliydratcs is bcing pursuer1 with iinnsnnl :ict,ivity, tlic task appears ovcr\vhclming. It is evident., ho\vcvcr, that Ih. Ucuscr ovcrcnnic many difficult~ics when he adoptcd tlic nrrangement irliich cltnrnctcriscd tlic cnrlicr issucs of his l r Lchrbuch dcr Ccllulo.scc1icniic." 9,'Iic third cdit.ion conforllls closcly to t.hc original niodcl, ;tiid, iu tlic rcvicwcr's opinion, t.lic autlior has :tctccl ~viscly, ns thc trcatmcnt is orderly nn? pcriiiits of csl)iiiision or inodificntion without unduly incrcasing tlic sizc of thc IJOOk. Tltc nmufncturc of cellulose or of cellulosic products is not includcil, ii ntl tlic rciiclcr's attcntion is dircctcd rjystcniatically t o tltc Imt-tlcfincd cliciuicnl rcactioiis in which ccllulosc t:rkcs part. 'l'ltcsc rcactioiis arc dcscribcd with C0llliliCLld:l~J~O cnrc uiitl :iccurncy ; a miilc ficld hus bccii c~~rcfttlly surveyed, obsolctc niattcr has hecu tlclctcd, ii~ld 110 iiiiportnnt rcnction appears to ltnvc bceii owrluokcil. 'I'hc trcntiiicnt of thc suhjcct leads naturnlly to thc iliscussion of tlte niolccular constitution of tlic ccllrtloscs, nntl this coniplcs problcni is dcnlt with in :in inip:irti~iI scliqliirly ninnncr. Althougli writtcii primiirily for tltc orgnnio (:Itcniist~, the pliysical prol)lcins with wltich ccllulosc chcmistry is incvitnbly nssocintcil itrc by no ~ncnns ignored, and a fcnturc of the iicw edition is i L spccial c.ha.ptcr, contributcil by I-lcrzog, on t h X-ray in wstigntioii of tho polysnccltnridc.
In no less dcgrcc than its prc!tlcccssors, tlic 1~rcscnt Iioolc will bo cxtrcnicly useful Loth t.o tlic ucntlcniic invcst.igntor iind to tlic tcchiiiciil chcniist whoso work i tirolves nn orilcrly knomlcdgc of tltc trnnsforniatioiis tindcrgoiic 1)y ccllulosc. Tlic hook is not nicrcly n work of rcfcrciicc, but is nlso a medium of trniuing, niid ns tho style is simple niid direct it iniglit, with ndvniiti\gi?, hcl its wily into tlic linncls of ndvnnccd stuclcnts who tlcsirc to rend this brnncli of chcmistry ns n spccinl subject.. .J. C. IRVJSE I?ricc 1.G.SO 111. I%LEJIIESTS OF OPTICAL ~IISElLtLOGY. : I S ISTR0I)UCTIOS TO Mrcrtoscoiw l ' n w o c , R m l n -. By N. 11. nnd A. K. WIKCIIISLL. 1i;ntirclg rcivrittcn nnd iniich