52 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



A detailed description of manufacturing plant of all kinds is 

 given, including the necessary equipment for sawing, handling, 

 Storing and transporting timber. The section on the seasoning 

 of timber is one of special interest, and there is also a useful 

 chapter on foreign markets, viewed from the standpoint of the 

 United States as an exporting rather than an importing 

 country. 



The book is primarily intended for use in America, and has 

 regard to the manufacture of lumber on a large scale. On 

 this account many of the methods described are not applicable 

 to timber utilisation in Britain. The volume, however, contains 

 so much information of a practical kind that it cannot fail to 

 be of use to the forest engineer in any country. Technical 

 terms which might be a stumbling-block to British readers are 

 explained in a glossary of thirty-five pages. A bibliography and 

 numerous tables and illustrations add considerably to the value 

 of this admirable treatise. F. S. 



Handbook of Field and Office Problems in Forest Mensuration. 

 By Hugo Winkenwerder and Elias T. Clark. Second 

 Edition. Published by Chapman & Hall, Ltd., London, 

 1922. Price, los. 



Students of forestry mensuration will find in this book a 

 helpful guide. The authors have not aimed at presenting a 

 complete series of problems covering the entire field of forest 

 mensuration, but give rather a series of carefully selected type 

 exercises which may be used as practical illustrations to supple- 

 ment lecture notes and text-book work. The book presents 

 the fundamental principles upon which the solution of 

 standard problems depend. The aim throughout has been 

 to give the student his bearings in the field by means of well 

 chosen exercises and examples, typical of everyday practice in 

 forestry mensuration. Having thus learned how to obtain and 

 utilise field data, the student can learn the further application of 

 these fundamental principles to kindred or associated problems. 

 By means of selected and simple examples the student is 

 taught the use of graphic methods, in determining averages by 

 means of curves. This leads on to a study and comparison of 

 Log rules. The cubic contents of felled and standing trees 

 are next dealt with by means of type examples, showing how 



