Price : p q e r , 17 gold marks ; bound, 18 gold marks. Rcadcrs of Prof. V. Rcclicnbcrg's trcatisc, Tlworie der Gewimmng w d Treiinung der nellrerischcm OeZc durch Dcstil2a~io~, will wclconic thc appcmtncc of this book, which i s tlcscribcd in tlic prefacc as a sccorid cdition of a part of tlic carficr volume.
Tlic first hunelrcd pages of tlic book arc dcvotcd to a considcr:ition, mostly tlicorctical, of such subjects :is vaporisation ant1 solution, mcthods of proving the purity of a single sul)stance, vapour prcssiircs cmd boiling points, dissociirtion, spccific h a t , licat of vaporbation, vapour tlcnsity, volatilimtion of solids and mcasurcnicnt of tcmpcraturc. Tho most important tucthods of dctcrmining tlic vapour prcssurcs and boiling points of pure substanccs arc then vcry fully and clcarly dcscribcd, and about 160 pagcs arc occupied by tablcs of tho vapour prcssurcs a t diffcrcnt tcnipcrnt~u.cs and tlic tioiling points imdcr ditfcrcnt prcssurcs of nearly five 11un-&cd substanccs, bib1iogiiphic:il rcfcrcnccs for cacli sulistaiicc bcing given in the following 37 pagcs.
Rclations bct\.ccii thc tcmpcrnturc and prcssurc of snturatcd vnpours arc ncst discusscd, and tlic inotliods of calculating boiling points by tiic rulcs of Rainsay ant1 Young and of Diihring arc cspliiincd.