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XXXA'I. Sot ices respecting New Books, 



Yorltsungen uber Experimentalpliiisih. Von AuGL'ST Kuxdt. 

 Herausgegeben von Kael Scheel. Braunschweig : Friedrich 

 Yieweg and Sohn. 1903. Pp. xiiv + 8o2. 



THIS volume, which is intended as a memorial to the late Pro- 

 fessor Kiindt, contains the courses of lectures on experimental 

 physics delivered by him during the Session 1SSS-S9. The book 

 consists of the lectures as they were then delivered, and no attempt 

 has been made to modernize them by references to recent scientitic 

 discoveries. The work forms an excellent introduction to physics. 

 The language is clear and simple, the treatment interesting and 

 original in its freshness. The text is beautifully illustrated by 

 534 excellent diagrams and pictures of apparatus. Few text-books 

 would probably prove more attractive to either the general reader 

 or the elementary student. A fine portrait of the author forms a 

 suitable frontispiece to this attractive volume. 



A Treatise on the Theory of Solution, including the Phenomena of 

 Electrohisis. By ^S\ C. D. Whetham, M.A., FM.S. Cambridge : 

 at the University Press, 1902. Pp. x-f 488. 



This important work is a most noteworthy contribution to the 

 literature of physical chemistry, and is bound to rank as a classical 

 treatise on the subject. Both on account of its thorough and 

 exhaustive treatment of the subject, and its remarkably clear and 

 cautious exposition of it, the book is one of unsurpassed excellence. 



Mr. Whetham is well known to those interested in physical 

 chemistry both as an original investigator and as the author of an 

 excellent little treatise on Solution and Electrolysis published about 

 eight years ago. The work under review is an expansion of this 

 treatise, and furnishes a good proof of the rapid progress made 

 during the last few years. It is practically a new work on the 

 subject. 



The book consists of fourteen chapters. Chapter I. contains an 

 account of thermodynamics, and deserves special commendation 

 for its crisp clearness : no better accoimt of this difficult subject 

 has, in our juds^ement, ever appeared. The next two chapters 

 deal with the Phase Eule. The problems connected with solubility, 

 osmotic pressure, vapour-pressures, and freezing-points are considered 

 in chapters lY.- VI. and in chapter YIl. we have a most interesting 

 critical account (remarkable for its unbiassed judgment) of the 

 various rival theories of solution. Chapters YIII.-XII. deal with 

 electrolysis, the conducti^^ty of electrolytes, primary cells, contact 

 electricity, polarization and the theory of electrolytic dissociation. 

 The last two chapters are concerned with diffusion in solutions and 

 solutions of colloids. A most useful and comprehensive table of 

 the electrochemical properties of aqueous solutions is added at the 

 end of the book. 



