114 Forestry Quarterly. 



Until the first book, on silviculture based on American data and 

 conditions is written, Dr. Schlich's volume will remain the Ameri- 

 can forester's handbook. B. E. F. 



Die Forsteinrichtung. Von Dr. H. Martin. Third Edition. 

 Eerlin. 1910. Pp. 281. 



Judeich's successor in Tharandt has been able in this volume not 

 to furnish any more complete or comprehensive volume than 

 Judeich's own classic work, nor has he improved on Judeich as 

 a text book — the absence of mathematical apparatus in that 

 respect being a detriment, but he has brought the discipline of 

 forest organization into a modern garb and up to time, with a 

 wide knowledge, which he has acquired not only from literature 

 but extensive travel. He has especially brought this discipline 

 more closely into relation with silviculture and other parts of 

 forest practice, which is an advantage although strictly not part 

 of a text book on forest regulation. In this respect the author 

 has perhaps followed French precedent. 



An interesting feature is the fact that the author abandons, at 

 least in part, Judeich's strict adherence to the soil rent theory as 

 a basis for forest regulation and for the determination of the 

 finanical rotation in an annual management, admitting that here 

 matters are different from those in an intermittent management 

 upon which the soil rent theory is built. 



This third edition is a considerable improvement over the first 

 and second which, as it were, might be considered preparatory to 

 this complete volume — it is the most modern not only as to time 

 but as to contents. 



It is divided into five chapters. The first discusses the prelimi- 

 naries for making a working plan. A new beginning lies in first 

 ascertaining by soil expectancy calculations or other means to 

 determine the propriety of continuing forest growing or farming 

 on parcels which are not under forest ; not forgetting the protec- 

 tive function of forest cover. 



The districting of a forest property in plain and mountain is 

 carefully gone into. The usual chapters on forest description 

 and methods of ascertaining yield data are very briefly dealt with 

 in 20 pages ; but their bearing on regulation requires 50 pages of 

 discussion. The chapter on the formulation of working plans 



