94 
IOWA ACADEMY- OF SCIENCES. 
DOMINANCE OF SPECIES IN PINUS MURRAYANA ZONE. 
Specimen. 
Per cent. 
Altitude. 
Location. 
Pinus murrayana 
75 
7,800 
Flat. 
« ( 
4 4 
7.1 
7,800 
Sunny side of Mt., E. slope. 
< ( 
4 4 
35.8 
7,800 
Shady side of Mt. on slope. 
( ( 
4 4 
46.2 
7,800 
Flat. 
( < 
4 4 
60.5 
7,800 
Flat. 
i i 
4 4 
30.4 
8,000 
Flat. 
i ( 
4 4 
9.3 
7,000 
Flat. 
< ( 
4 4 
18.6 
7,000 
Flat. 
« i 
4 4 
27 
7,000 
Flat. 
( ( 
4 4 
91.2 
7,000 
Flat. 
4 4 
99.2 
7,000 
Flat. 
< ( 
4 4 
8.12 
7,000 
Flat. 
( < 
56.4 
7,000 
Flat. 
« t 
4 4 
66 
7,000 
Flat. 
4 ( 
4 4 
29 
7,000 
Flat. 
P. 
albicaulis 
5 
8,000 
Flat. 
i < 
4 4 
35.5 
7,800 
Sunny side of Mt., E. slope. 
( 4 
4 ( 
34.8 
7,800 
Sunny side of Mt., N. slope. 
i 4 
4 4 
30 2 
7,800 
Flat. 
1 4 
17 
7,800 
Flat. 
( ( 
4 4 
22.8 
8,000 
Flat. 
1 ( 
4 4 
9.4 
7,000 
Flat. 
4 4 1 
22 
7,000 
Flat. 
< ( 
5.4 
7.000 
Flat. 
( ( 
4 4 
55.5 
7,000 
Flat. 
( 
4 4 
25 
7,000 
Flat. 
i ( 
4 4 
16.6 
7,000 
Flat. 
P. 
flex ills 
21.3 
7,000 
Flat. 
( ( 
22.8 
8,000 
Flat. 
Abies subalpma 
12 
7,800 
Flat. 
14.2 
7,800 
Sunny side, E. slope. 
( ( 
4 4 
29 
7,800 
Sunny side of Mt. , N. slope.* 
< ( 
i 4 
13.2 
7,800 
Flat. 
4 ( 
4 4 
16.5 
7,800 
Flat. 
( ( 
i 4 
30.4 
8,000 
Flat. 
( ( 
4 4 
6.2 
7,000 
Flat. 
4 ( 
4 4 
80.6 
7,000 
Flat. 
i ( 
4 4 
72 
7,000 
Flat. 
< ( 
I 4 
76 
7,000 
Flat. 
< ( 
4 4 
17.4 
7,000 
Flat. 
( ( 
4 4 
32.9 
7,000 
Flat. 
< ( 
4 4 
9.4 
7,000 
Flat. 
( i 
4 4 
11 
7,000 
Flat. 
i ( 
i 4 
108.9 
7,000 
Flat. 
( i 
4 4 
5.4 
7,000 
Flat. 
Picea . 
8 
.7,800 
Plat. 
( i 
42.6 
7,800 
Side of Mt. , N. slope. 
( ( 
110.4 
7,800 
Sunny side of Mt., E. slope. 
< ( 
5.5 
7.800 
Flat. 
16.4 
8,000 
Flat. 
ANNUAL GROWTH OF DIFFERENT CONIFERS. 
The growth of Finns murrayana P. alhicaidis, Abies 
suhalpina and Picea engelmannii is comparatively small 
during the early life of the species. 
