nnd this will nppcnl t o tlic stiidcnt of chcmistry nntt brondcii his outlook 011 the subject. Tlic -olume bcgins witli n clinptcr on tlic photosynthcsis of plant products follo\.ctl by clinptctcrs on chlorophyll nnd otlicr iiaturnl pigments, tlic cnrLohydratcs, tnnnins, oils, fnts, wnscs, tcrpciics, nniino-ncids, naturnl bases nnd tlic nlknloids, n sclcctctl list of rcfcrcnccs bciiig givcn at the cnd of cnch chapter.
!L'Iic chapter on cnrbohydrntcs cspccinlly lcnrcs room for niucli iniprovcnicnt, niitl tlic 42 pngcs devoted t o tliis chnptcr iiiiglit witli ntlvnntnge linvc bccn inorc tlinn doublctl, consitlcring tllc size of thc book. 'J'lic siilfis '* -0sclc " for tlic diffcrciit groups of cnrboliytlrntcs " i1ioiio.wLccli1iroscs," " tlisacclinroscs," ctc., iiscd by tlic nuttior insjcncl of " -id0 " sliotild hc rlroppctl, its it is now out-of-tlntc and, morcovcr, it implies n frcc rcducing group in tllc coinpound. Undcr tlic clcgrntlation of n hcsosc into n pentosc by cliffcreiit cliciiiiciil nictliods 011 pi). .I,'i-fi, allusion niigllt Iiavc been iiindc to tlic fiict tlint hy none of thcsc iiictliocls linvc I N ! I)ccn rtblc t o iriiitritc tlic tlcgriulntion of licsoscs ns tiikw plucc in imtur~-viz., clcstrosc to sylosc niitl giihctosc t o nrnbinosc. Tlic spncc dcvotctl to cnzyincs licrc rind tlicrc in tlic book is tlisnppointing r i d tlic subject Ollght to bc trclltctl n t 1CIlb~h ill 1L ScI)ilrlltC clinptcr, but one supposcs tlicsc clieinicnl rcngcnts of tlic ccll to bc bciicntli tlic notico of tlic orgnnic clicniiht of t o d a y since " tlicy arc not crystnllinc entities." Tlic section in this chapter 011 polysncclinridcs coiitains sis pngcs, covering ccllulo.~, stiircli, iiirrliii, ctc., nnd dculs principally witli tlic rcsiilts of nictliylntiori of tlicsopolysnccharitlcs, tlic work tloiic on the Coiitiricnt beiiig oniittcd altogctlicr. Clycogcri