28 Forestry Quarterly 



Pine. Two equally interesting chapters on Lumber Production, 

 mainly upon the basis of Census figures, and on Foreign Trade, 

 bringing together export and import statistics for the last hun- 

 dred years, finish the volume. 



The logical arrangement of the book is not apparent, but as a 

 handy and comprehensive reference book on all the subjects men- 

 tioned, it will be appreciated. Its value as such would have 

 been enhanced by an index, which in this case is only poorly 

 supplanted by the table of contents printed in running lines, 

 which makes it difficult to catch the subjects. The work is laid 

 out on a broad basis, and if the following volumes confine them- 

 selves to the actual history of the lumber industry in the United 

 States and its technical detail, our criticism of disproportion in 

 the present volume will vanish. 



There are too many points of interest calling for comment, 

 hence we must forego the desire, and recommend merely to every 

 reader to become possessed of the volume. B. E. F. 



Forest Mensuration, by C. A. Schenck, Ph. D., Biltmore 

 Forest School, 1905. pp. 71. 



This pamphlet covers briefly the whole field of forest mensura- 

 tion, and contains, besides the regular chapters on volume, age, 

 and increment of trees and forests, one chapter on lumber, and 

 another devoted to stumpage values. Like other similar pam- 

 phlets by the same author it is meaty, interesting, and bears 

 signs of haste in preparation. It is a compilation of methods, 

 notes, and facts, rather than results of original investigation — 

 the author but seldom expressing his own opinion regarding the 

 value of one or another method or procedure. There is no 

 reference to the sources from which most of the data have been 

 borrowed. For one familiar with the subject, the pamphlet wall 

 be of considerable value as a concise reference book ; a beginner, 

 however, we are afraid, will be perplexed by the many different 

 methods, not knowing exactly which to use under different con- 

 ditions. Dr. Schenck, true to the traditions of the old masters 

 of forest mensuration, devoted several pages to the mathematical 

 formulae for determining volume of trees, although he himself 

 admits that they have a mere historic interest. In our opinion 

 they could be left out entirely, as unnecessar}' ballast. These 



