โ Scribed by Bone, William A.
No coin nor oath required. For personal study only.
A. T. \YiIlinniscin, Jl.A,, 1'11.1). 1'11. 107. Osfortl : (Ilitrrntloti I'rrss. lAontloti : 31. Jlilfortl, Oxford Univckrsity I'r~!ss, 193.1. 8s. &I. This 1)ook is infornwtivc in ninny wiiys ; iintl p rlinlis cliirfly so rthoitt the rciict ions of ltitiniin niincls townrtls tliosr 1)ctwccn liytlrogcn t t n d osygcn ; for it portritys tltciii in tlic light, of tlic now ciirrcnt conception of " c*liniii rcnctiotis." It, fiirnislics nn iwdlrnt. csni~iple of Itom very ~tiuclt in rccciit ye:irs t Iic bins in nciidcniic rcsciircli lins sltifted from rspcrintciit, to thcory, rintl from tlic diiyliglit of tlic Iii1)oriitory to the lniiip-light of the study. It now scwiis intlccd it far cry to t Iic cltissic clnys of vsjirrinicntnl ilisi*overics in gnscoits internctions, \.lien grriit mnstcrs of t h : nrt, working limit1 tltcir piipils, tniiglit tlicm t o t:splorc tlic mystcrics of flninc itntl cornhitst ion l)y ~neuns of \vcll-tlircct cd c s p i -
๐ SIMILAR VOLUMES
## CHEMISTRY AND INDUSTHY 1117 or ia " energy levt~ls~" t,ltc ntonis of the inert gnses tnnrking t,hc siicocssivc coniplet.iott of thcsc clcctronic proupinp \\'IICII the outer litycr is incoinplcte, the clectsroiis forniiiig it. ditl'cr froin those of inner 1:iyers i i t that they nrc tiiticli ino
IXDUSTRY 161 1x1. 14, IURO givcn as foot-notes, but that is n minor, nnd indeed, a personal griiniblc, which is probably not shnrcd by others. To sum up, tlic book is a valuablc and comprchensivc account of our knowlcdgc of photo-rcnctions in liquid and gnscoiis systems up to thc prcscnt dntc, and
Tlic rcputation of 'I BJcllor " has bccome so firmly established that no lcngthy introduction is called for.
CaRPO,. The filtrate is worked up for calcium nitrate. Among thc othcr prodi1ct.s of this works arc phosphoric acid and nminoniuin phosphntc nnd ccrtnin ngriculturnl preparations under trade names and contdiling known irmounts of phosphorus and nitrogen.