plied science, a complicat,ed derivative of a number of basic sciences-in this case optics and its associated mathematics, tiotl to tlw lilerntnrr of pl.nclicnl litmsolid state phy~ies, physical chemistry, tious in ~lonaq~ieaitssolvrtits. Unforand organic chemistry. Those working tunately mnch of the dism~ssimof various in the area find it interesting and wish it principles and methods is mn-erit,ieal, a d were betber known. The conference rethe selection of material for inrlnsiotr in ported in this hook was typical of t,he this hook is often poor. For example, internat,ional conferences on the subject, despite the emphasis placed on thcoretieal which have been held a t two-year interaspects in the earlier chapters, almost no vals. The book probably is most valumention is made of tho excellent w d funable as a means of m~rveyingthe current damental work by Kolthoff and Bruckenstate of photographic science. A constein on ionization constants and titration siderable knowledge of the subject. is curves in acetic acid and other solvents. needed to make fnll nse of the book. The I n the chapter on indicators extensive eleven introdnctory addresses are suitable tahles list indicators for w e in differeut for scientists in related arem who wish solvents, hilt t,here is no indication as to good summaries of specific portions of whirh indicator t o ltso for til.rztion of a n photographic science, but the 122 experiacid or base of any given strength. The mental papers are in the form of long n~rthorignored readily a v d s h l e , p ~ ~ h l i s h e d abstracts which were written for colpapers that reporl transition ranges of n leagues in the field. T h e bookis anecessity tnumher of intlicalors in different s o l v e ~ ~ l s , for the library of any l ~ b o r a t o r yof phoboannlogous l o pII transition ranges ill graphic science, and useful t o many aqueom solution. technical users of photography, for st. least three rea5ons: to date, only about J m m s S. Fnrrz Iowa Stale Universit?~ half the pnpcrs have been published in jonn~sls; tho discnssions represent the Anzes, Iowa best avsilable critical comments on the Photographic Science (report of the papers; and the rolleelion of ihe papew Congress International de Science Photoin sommxl.iaod form makes them especially vnlrlnhlc for quick refercnre. The graphique held in Paris, 1965) ,we of three langnages in the report is n Edited by J . Pozrradicr. Ilistribnted limitntion < > r ~its aceesaibility; mothel. is in the U. S. by Pitman Publishing the pt.ice. Corp., New York, 1067. 616 pp. The conference was orennised into Figs. and tables. 18..5 X 23 em. $44
book reviews
Photogmphic science is, like any ap-
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Journol o f Chemical Education
graphic gelatin, Spectral sensit,isat,ion, Action of light: b~minescence, phosphat.escenee, t,raps, latent image, development,, fixation, storage, image st,nlctore. Whilo the great majority of t,he papem are concerned wiih silver halide emulsions, i t shorrld be noted that three of the introductory lectures were concerned with non-silver systems. This is a much higher proportion than in the experimental papers. One mnst admit bhat t,he teehnology of tho silver processes is still in advance of the science, and in the nonsilver systems tho discrepancy, a t least in terms of published scientific work, is even more painful. In a hook of t,his length and type, i t is impossible t o summarize the contents and unwise t o stt,empt comparative judgements on the many c m t r i b u t i o ~ ~ . , hnt the reviewer may be allowed to name some which impressed him strongly. These include the rcview lect,wes by Eggers, Klein, Malajec and illeyer on tho present state of knowledge of devclopmenb; by Berg on techniques of investigat,ing the latent image in silver halide emulsions; and by C ~ ~ s i e ron s development, of non-silver systems. Experimental progress seemed t o be of t,he same order in d l sect,ions; there were no outstandins brcakthrooghs, hut a. consistent advance. T h e book is well-edited and abt,ractively printed. BURTH. CARROLL
Rochesle~Instil~~te of Technology Rochester, lVew Yovk
