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THE THEORY OF STIIOSG ELECTROLTTES. d gcncrtil discussion hclil by tlic Farnday Society, April, 1927. Pp. 333-544. London : !rhc Fnrndny Society, 1927. 15s. Gd. Tlicory of.Stroiig Nlcctrolytes-of wliicli this voluinc is tltc report-was licld by the Faradny Society a t Osford in April, 1927, nnil n compnrison with tlic report on tlic discussion on " 1'hc present position of tlic tlicory of ioiiisntiou " ltcld in 1.919, S ~O I V S the cuornious ndrniices illid nlliiost coinpletc cliange in outlook which liavc occurrcd in the past fcw years. Tlic prcscnt ilisciission is divided iuto t,xo sections, Piirt I-Mobilities of ions, and P:lrt lr-Activity. Part 'I contains iiii nccoiiiit of thc conductivity of strong clcctrolytcs by Ilcbyc, iind notcs oil nncl n revision of tlic Dcbyc-Tiuclccl t h o r p by 11Clnrt.ley niid Bell ant1 by Onsngar. 0 t h pniicrs dc:t 1 with ionic inobilitics in nqiicous niid iion-nqucoiis soliitions, nntl tltc cvidcncc for t h csistcncc of untlissociatctl titolcci~lcs ant1 coiiiplc~ ions iii solutions of strong clcctrolytes. In l'nrt 11, t,Iic introductory p p c r by Brijnstccl nnd two pnpcrs by I<iindnll arc a usclul introduction to thc ~iiotlcrit aspect of tlic problcni. Somc niiomnlies of the theory arc discusscrl by Bjcrruln, and othcr nutliors tlcnl with spccinl points of tlic tlicory nnd soinc rccciit rcsctirclics, n i i d n record of the disciissions which followcd t.lic rciitlitig of tho papers is inclitdctl. l'hc riipicl dcrcloptiicnt of t.lic tlicory of tlic ~Oitl~JlCtc clissociiit,ioii of strong clcctrolytcs in aqueous solution, nntl tlic tlicmiodynnniic t,rcntincnt froiti tltc ncw point of view of activity, wliicli followcd from t.lic ciirlicr pnpcrs of 13jcrriun:inclQ. N. 'Lc&, is onc of tlic oiitstnnsliiig dcvclopnicnts of post-war physical cl~cinistry. Ncw mntcriiil lins ncciitiiitlntcd so rapidly t.lt:tt n frcc ilisciission by thc Icnding worlccrs on the problciii Iind bccoltie wry itcsiriilh, ii l i d the report is ii \wliiablc atltlition to tltc Pnrntliiy Socicty's piibliciitioiis. 'It, niigltt with adwntiigc Iiiivc contiiittcd a sutuitiiiry siitiilnr to tlic oiic contributcd by Ritlcnl to t.ltc rcceiit IATEX. SEIS ''o1ticounlm, SISLSI.: GIC\VISSUXG, 1 h . x ~-:Dr. 1% A. IhIJSElt. With t i n itppcitdis: L'ntcn1,iibcrsiclit. I3y Dr. C. I h I t i i i voii 13o(.riicgg. 1'1).
📜 SIMILAR VOLUMES
of each chapter, and thc various cspcrinicnts which tltc reader is invitccl to inalrc, tliough sotnc of these are liable to be misleading, 3s wlicii i t is suggestctl that R q m r t c r of a lrriclr shonlcl IN tested for absorption. The Iil~liogmpliy is esccpt;ionally poor, and t h e index, t,l)ougl
sumiiinrised that rcfercncc to tlic origiiial pntcnt would scldoni bc necessary. For the classcs of pntcnt covered, t.lic book is equivnlent to a hnlf-yearly " Friedliinder," and it, will bc found n liiintly book of reference. E. 11. RODD