Part 11. 1'1). sssis+GSl-lG75. Paris : Gaiitliicr-Vilinrs ct Cie. ; Kew York : NcGrnw-Hill Publishing co., Inc., 192s. " Gic's ii fnct, ninii," brnn\rlcil IL Scotsiiian in cliurch, intcrrupting the prcnclicr's scriiioii ; lic ires enquiring for tlic data of rcligion and kncw iiot wlicrc to find tltcni. Chemical tccltnologists, in gciicrnl, iuid sclf-stylcd chcniicnl cngiiiccrs in particular \rouI(l, froin tiie revic\rcr's expcricmc, nppcnr to bc in like cnsc as rcgnrds tlic facts of tlicir craft-+,lie so-called data of physics nnd clicniistry. i\nd tltis, dcspitc tlic fact tlint books, Inrgc niid ainnll, tlcvotctl to tlic tnlJiilirtion of pltpsicnl and clicniicnl data arc listed in all cnt:rlogucs of scicntific literntiire nnd mrc inct with cvcrywlicrc. Tlic situnt,ion rcscnilhs that which lins dcvclopcd in America, \rlicrc tlic policc hnvc t o hunt for tile I~ootleggcrs who nrc irvoitlctl by tltc iiian-in-tlic-strcct tvitlt tlic iitinost clifliculty. Arc tlicrc not old nntl fniiiilinr %ye nntl T~nhy, TA:bntlolt nlid Bornstcin, liccucil tlc Constniites l'liysiqiics, Tntcrnirtional Critical Tnlhs, ; r i d ninny otlicrs ? Al tlicsc arc dcvotctl to tltc tnl)ulntion of standard rcsalts. Thc present tnlilcs nrc of :r rntlicr special kind, tlic results tabulated bcing all tlcrivcd froiii literirturc p~thlislicd in 3023 nnd 1924. Tlic first pnrt of voliiinc 1'1 nppcnrcd in 1927 and \ w s rcvicircd in CIIIEAIISTIN ASD 1s I~USTRY. It wns dcvotcd inorc cspccinlly t o spcctroscopic data.