806 jouRNAi, oif Forestry 



trees. No benefit resulted from loosening the soil by blasting, or from 

 application of various fertilizers, or from intersowing of lupine, pitch 

 pine, or jack pine, or from modifying the silvicultural system so as to 

 give the advance reproduction a start over the heather. W. N. S. 



Aleissner. J'crsuche sur Hebung von Pohren unci Ptchtenkrilppelkulturen. 

 Forstwiss. Contralbl., 42:315-329, 1920. 



The author sums up the results of an inspec- 

 Norzvegian tion trip of the forest plantations on the west 



Forestry coast of Norway near Stavanger and Bergen. 



Association These plantations are up to 50 years old and con- 



sist of Norway spruce, Scotch pine, Douglas fir, 

 noble fir, oak, and birch. The soil is generally excellent for reforestra- 

 tion and the local sentiment in favor of this work very good, thanks to 

 the energetic leadership of a few men. Private owners are required 

 by law to cut according to the State's dictum and to replant denuded 

 tracts. J. A. L. 



Heiberg, Axel. Det Norske Skogselskap. Tidsskrift for Skogbruk, 28:187- 

 200, 1920. 



MENSURATION, FINANCE, AND MANAGEMENT 



Official instructions for determining the repa- 



Loss of Future rations due from Germany as a result of forest 



Value and Forest destruction in France provide for including in 



Reparation the estimated damage the loss of future value in 



the case of trees or stands destroyed prior to the 



normal age of exploitation. A simple method of determining this loss 



without the use of compound interest formulas is as follows : Estimate 



the volume, and from this the value, of the trees on the basis of its 



diameter in 1914 and of its normal diameter at maturity (assumed to 



be 40 cm.). The diflference between these values gives the gross loss 



in future value ; and this gross loss divided by the ratio between the 



value at maturity and the value in 1914, gives the net loss. While this 



method avoids any determination of the two unknowns rate of interest 



and number of years to maturity^ — in the usual compound interest 



formula — it gives precisely the same result, since the ratio between the 



value at maturity and in 1914 (-yj is equal to 1.0p° for the diam- 



