Periodical Literature. 327 



each of 10, 20, 30 to 140 years of age the stock value would be 

 49418 Mark (say $680 per acre) and furnish 107.6 Mark annually 

 per hectar (say $10.35 P^"" acre). This is to say, the higher rota- 

 tion produces about $1.80 more per acre. 



Now the question is whether it is more profitable if the stock 

 corresponding to 140 year rotation worth $680 and bringing in 

 $10.35 P^^ ^cre is in existence to reduce it to that of the 70 year 

 rotation worth $264 and bringing in $8.55 per acre, when the 

 difference of $416 may bring a better interest rate, namely $12 to 

 $16 in addition to the $8.55, say $24. 



The author points out that in this calculation the sure increase 

 in wood value of the older stands is overlooked. For the 10- to 

 70-year-old stands such an increase is hardly to be expected, but 

 experience has shown that the 80 to 140 year old stands may even 

 in the next 20 years double and treble in wood value, so that 

 although the capital value may thereby become $2,000 per acre, 

 the income would be $30, or more than in the other way can be 

 obtained. 



The idea of forest reserve funds, the author says, has become 

 fashionable and is considered modern, and he considers its ap- 

 plication undesirable from a national point of view. 



Jahrliche Brzcugung wertvollsten Holzzmvachses auf kleinster Fldche. 

 Forstwissenschaftliches Centralblatt. February, 1911. Pp. 7^-7^- 



After nearly one hundred years of adhering 

 Working to the budget regulation for the Bavarian 



Plans Forest Department, which was based upon 



in the instruction of 1819, new working plans 



Bavaria. are to be formulated with considerable 



changes. In an extended article Dr. Vanse- 

 kow gives a historic statement of the developments and a descrip- 

 tion of the present proposed procedure. The "normativ" of 1819 

 followed closely the teachings of Hartig in the volume allotment 

 method with the stand as the unit. The instructions for ascertain- 

 ing stock and increment on which the method is based, should with 

 little modification even to-day be found most satisfactory. 



As regards the rotation, the old instruction requires that it be 

 "based upon careful investigations of the age at which the highest 

 volume and money yield or else the required dimensions of those 

 sortiments can be secured which are most desired, or else at which 



