Mr. Edward Arnold's List of New Books 13 



WOOD. 



21 /Bbanual of tbe "Hatural Ibistore auD JnOiistrial applications of 

 tbe timbers of Commerce. 



By G. S. BOULGER, F.L.S., F.G.S., A.S.I., 



Professor of Botany and Lfxturek on Forestry in the City of London College, 



AND formerly IN THE RoYAL AGRICULTURAL COLLEGE. 



New Edition, Revised and Enlarged and profusely Illustrated. 

 Demy 8vo. 12s. 6d. net. 



Of the many thousand different kinds of wood, the author deals 

 with some 750 of those which are practically known in general 

 commerce. The book is divided into two sections. The first de- 

 .scribes the structure and development of trees, followed by chapters 

 on the recognition and classification of woods, selecting, seasoning, 

 storing, defects, methods of testing, etc. The second section, com- 

 prising more than half the book, gives condensed accounts, with 

 physical constants, when these are known, of the different woods of 

 commerce, and will prove most valuable for purposes of reference. 



In an appendix will be found nearly fifty full-page illustrations of 

 magnified sections of all the principal woods of commerce. 



ORGANIC CHEMISTRY 

 FOR ADVANCED STUDENTS. 



By JULIUS B. COHEN, Ph.D., B.Sc, 



Professor of Organic Chemistry in the University of Leeds, and Associate of Owens 



College, Manchester. 



Demy Svo. 31s. net. 



The book is written for students who have already completed an 

 elementary course of Organic Chemistry, and is intended largely to 

 take the place of the advanced text-book. For it has long been the 

 opinion of the author that, when the principles of classification and 

 synthesis and the properties of fundamental groups have been 

 acquired, the object of the teacher should be, not to multiply facts 

 of a similar kind, but rather to present to the student a broad and 

 general outline of the more important branches of the subject. This 

 method of treatment, whilst it avoids the dictionary arrangement 

 which the text-book requires, leaves the writer the free disposal of 

 his materials, so that he can bring together related substances, 

 irrespective of their nature, and deal thoroughly with important 

 theoretical questions which are often inadequately treated in the 

 text-book. 



