100 FOREST COMMISSIONEK'S REPORT. 



1. Openings : Form about five per cent of the entire space. 



2. Distribution of trees: In clusters, the smallest trees of each species not- 

 ably so. 



3. Crowns of large spruce well developed; fairly dense ; 3-6 and 6-10 classes gen- 

 erally thin and suppressed. Crowns of large firs open, straggling, often dying. 



4. Trunks of large spruce straight, unless noted; covered with limbs generally 

 above ten or fifteen feet. About one-third of those over 18 inches in diameter are 

 clear 20 or 25 feet. Trunks of large firs straight; covered with limbs from a few 

 feet above ground. . 



On the east slope of Mt. Adams in the Presidential range, about 

 1,000 feet below timber line, on very steep and rough ground, 

 rocks form a considerable portion of the surface, but clinging to 

 the slopes and in crevices and hollows is enough soil to support a 

 large crop of trees. Most of this soil, so far as could be seen, is of 

 vegetable origin. 



On the large spruce live limbs begin as a rule 25 — 30 feet from 

 the ground ; 40 — 45 feet is an average length of crown for the 

 larger timber trees. The smaller ones in the 10 — 14 class would 

 not equal these dimensions, while there is in all classes much varia- 

 tion. Crowns are fairly dense and in good condition being gener- 

 ally much heaviest down hill. 



The birches on this acre were generally crooked, with low limbs. 

 Crowns were not as a rule large, and the general impression was 

 conveyed that they are above the level of quick and smooth growth. 



As regards fir, the great number of small trees, and the compar- 

 ative fewness and poor condition of the larger ones, are the most 

 noticeable points. 



SUMMARY OF GROWTH UPON ACRE. 



Spruce : 



No. trees on acre 240 



Estimated volume 2550 cu. ft. 



No. over 10 inches diameter 70 



Estimated value of same 2360 cu. ft. 



Merchantable lumber about 9000 ft. B. M. 



White and Yellow Birch : 



No. trees 143 



Estimated volume 400 cu. ft. 



No. over 10 inches diameter 10 



