SOIL AND ^ 

 SITUATION J 



QUALITY II. 



DOUGLAS FIR 



[Continued. 



* This sum represents the average nett income per acre which will be earned upon the average 

 ipital when once the forest is in proper working rotation, i.i 1 .., \vhim it is normally stocked 

 with crop* of all ages from one year old up to maturity. The cost of replanting is estimated at 5 per 

 acre, and it is assumed that the land i-t allowed to He fallow for one year. 

 H 



Diagrams 



showing 



proportion of 



Thinnings to 



Final Crop. 



On a 

 46-year 



rotation. 



IN VOLUME 

 (To 3 inches diameter.) 



IN VALUE. 



On an 

 80-year 



rotation. 



The most profitable rotation 



(according to the yields and prices indicated) 

 Is one of 46 to 5O years, if interest is reckoned at 3i per cent. 



or 46 4" per cent. 



Prices of Timber (standing). 



The timber has been valued according to the following scale of 



prices : Per cub. ft. 



S. D. 



. 

 5 cub. ft. 



Trees containing less than 3 cub. ft 

 ,, 3 cub. ft. and less than 



5 

 7 

 9 



12 

 15 

 20 

 30 

 40 

 60 



,, and over 



12 

 15 

 20 

 30 

 40 

 60 



