224 AVERAGE YIELDS FROM FOREST LAND 



DOUGLAS FIR. 1 



Close-Canopied High Forest. Soil and situation Quality I. 



* For that which is over 6 inches quarter girth. 



Value of final crop, 11,200 cub. ft., at gd. 

 = 420. 



Total yield of thinnings = 9,620 cub. ft. to 2 in. q. g. 

 final crop = 11,570 cub. ft. at 2 in. q. g. 



Total = 21,190 



Average annual increment 



21,190 



75 



282^ cub. ft. 



1 There are no mature crops of Douglas Fir in this country, but 

 the author submits the above table after careful study of the rate of 

 growth of young crops in this country, and also after careful study of the 

 rate of growth in its native country, where in many cases the climate is 

 very similar. 



