Notices r^spectiny New Books. 723 



On p. 13, the term " wave-front " is api)lied to a ])lane the 

 vibrations at different points of which are in different phases ; and 

 on p. 69, in a reference, " meteorology " is, by a printers' error, 

 used for •' inetrology." 



Die Konstitution des Kamphers unci seiner Wichtigsten Derivate. 



Die Theoret'ischen Ergehnisse der Kampherforscliung monogrcqyhisch 



darqesteUt von Ossian Ascha:n". Braunschweig : Friedrich Vieweg 



und Sohn. 1903. Pp. xi + 117. 



Tins vahiable monograph will be found extremely useful by students 



of organic and physiological chemistry, and by others interested 



in the camphor group of compounds. jSTumerous references to 



original sources of information are given by the author. 



Journal dc Chimie Phi/sique. Publie par M. Philippe-A. Guye, 

 Professeur de Chimie a V Universite de Geneve. Greneve : 

 Henry Kiindig, 11, Corraterie. Paris : Gauthiers-Villars, 55, 

 Quai des Grauds Augustins. Tome I. jNTo. 1. Juillet 1903. 

 Pp. vii-1-96. 

 Nothing could be more eloquent of the great activity now pre- 

 vailing in the domain of Physical Chemistry than the recent 

 appearance of several new journals devoted to this branch of 

 science, and the establishment of a new Society of Electrocheraists 

 in our own country. Among the contributors to the new Prench 

 journal we notice the names of most of the leaders in physical 

 chemistry. Abstracts from other periodicals, lists of patents, 

 and reviews of recent books form very useful features of the new 

 periodical, and we wish it every success. 



Papers on MecJumical and Physical Subjects. By Osboris'e Eet- 

 NOLDS, M.A., F.R S., LL.D., Mem. Inst. C.E.^ Professor of 

 Engineering in the Owens College^ and Honorary Felloiu of Qucen^s 

 College^ Cambridge. Yokime III. The Sub-Mechanics of the 

 Universe. Cambridge : At the University Press. 1903. 

 Pp. xvii + 254. 

 U>'LTKE its two predecessors, the present volume is likely to 

 appeal to what we are afraid will be only an extremely limited 

 circle of readers. It consists of a remarkable and very elaborate 

 essay on a possible structure of the physical universe — the only 

 possible one, according to the author. The intricate analysis by 

 which the author seeks to establish his claim to the solution of the 

 problem of the physical universe will prevent all but the most 

 highly-trained mathematicians from follo\^dng his arguments. 

 While it would be rash to deny that anything from the pen of 

 Prof. Osborne Eeynolds is deserving of the closest and most pains- 

 taking study, one cannot help regretting that his remarkable gifts 

 of mathematical analysis are not combined with those of clearness 

 and elegance of style, and that his writings are characterized by an 

 almost forbidding sternness of exposition. It also seems to us 

 that in the present instance some of his conclusions are stated with 

 undue dogmatism. 



