] 90 Notices respecting JSfew Books. 



For the sake of convenience, the matter dealt with is arranged 

 under the following heads : — 

 I. Greneral stereo-chemistry. 

 II. Optical isomerism. 



III. Geometrical isomerism of optically inactive bodies. 



IV. Connexion between space-relations and chemical reactions. 

 The work is divided into nine sections, corresponding to the 



nine years which it covers, and in each section the above method 

 of sub-division is followed. The chapter on Optical Isomerism in 

 the 1894 section is contributed by Professor E. "Wedekind, and 

 the corresponding chapter for 1896 by Professor P. Walden. 



Even a cursory examination of the two volumes cannot fail to 

 impress one with the immense amount of work which has been 

 done in this branch of science, and with the absolute necessity for 

 a compilation of this kind. By undertaking this laborious task, 

 the compiler has performed a signal service to science ; and his 

 efforts will be appreciated not only by the professional chemist 

 but by workers in other branches of science who have occasion to 

 consider the many problems involved in stereo-chemistry. 



"We cannot close this brief notice without making special mention 

 of the very comprehensive index, which is arranged in a manner 

 well calculated to save time to the busy worker who has occasion 

 to make use of the Jahresberichte tier Stereochemie . 



Kritische Studien iiber die Vorg'dnge der Autoouydation. Von 

 C. Englee, und J. Weissbeeg. Braunschweig : P. Viewig 

 undSohn. 1904. Pp. xii + 204. 

 The exact mechanism of the various slow oxidation processes has 

 formed the subject of numerous controversies, and even at the 

 present time there are differences of opinion on the exact nature 

 of some of these processes. The authors of the book before us 

 have done good service by bringing together all that is known 

 regarding this subject, and arranging it in a systematic manner, 

 in accordance with the theoretical views developed by them. The 

 historical introduction forms very interesting reading, and full 

 credit is given to the important work of Schonbein, to whose 

 memory the book is dedicated. 



Etude sur les Resonances dans les JReseaiuv de Distribution par 

 Courants Altematifs. Par Gr. Cheyeiee. Edite par L'Eclairage 

 Electrique. Paris, 1904. Pp. 76. 

 Although not containing anything strikingly original, this 

 pamphlet may be recommended to engineers in charge of alter- 

 nating-current systems of distribution as giving an exceptional! v 

 clear account of the phenomena of electrical resonance, and of the 

 conditions favouring their production. 



Den EleJctrisTca Gnistan. En Undersokning af de Fysikaliska 

 Yillkoren for dess Slocknande. Akademisk Af handling af 

 John Koch. Upsala: Wretman. 1904. Pp.80. 



This pamphlet gives an account of researches carried out by the 



