432 



Forestry Quarterly. 



1889-98 

 1899-1908 



Average 



5190 

 5863 



4343 



107 

 117 



103 



2.1 

 2. 



2-45 



The author claims upon the basis of his calculations that the 

 selection forest works with only 56 to 66 per cent, of the timber 

 forest stock capital which he figures at 7846 cubic feet for a 

 120-year rotation and that it yields a better interest rate, but in 

 his calculations (theoretical) for the timber forest, while the 

 felling budget figures 269 cubic feet per acre per year as against 

 103 for the selection forest, the use per cent, is 2.42, practically 

 the same as for the selection forest, for which, however, an in- 

 crement per cent, of 3.6 to 3-9 is figured from stand analyses 

 (235 to 312 cubic feet.) 



A soil rent calculation — as all such calculations based on un- 

 certain grounds — comes out more disadvantageously to the com- 

 partment timber forest, e. g. $4.50 as against $2.70. 



The article is replete with tabulations in detail of selection forest 

 stands. Of these, as of special interest, we reproduce the fol- 

 lowing which may be suggestive for American investigators. 



Assortments in close Fir Stands in per cent, of Total Wood 



Volume. 



Assortments. 



Poles 



V class 

 IV " 



Logs y 



III 



II 

 I 

 Bark on logs 

 Cordwood split 



" round 



Brushwood 



