30 
BULLETIN 544, U. S. DEPARTMENT OF AGBICULTUBE. 
height. The succeeding second growth may pass through the same 
stages, so that these stands may be relatively young. 
Table 4 gives height growth of selection stands in Maine, New 
Hampshire, the Adirondacks, and West Virginia. It will be noted 
that the heights in New Hampshire are below those in Maine and 
New York, particularly in the larger diameters. This is undoubtedly 
due to the fact that the New Hampshire data were collected toward 
the southern edge of the White Mountain spruce forests, where the pre- 
vailing conditions are less favorable to spruce than those farther 
north. The values given for New York, on the other hand, are 
doubtless somewhat high because of the exclusive use of dominant 
trees as a basis for the height curve. The average height develop- 
ment is slightly better in New Hampshire than in Maine and is 
somewhat better in Maine than in New York for the same type or site. 
Table 4. — Height growth of spruce (based on diameter). 
[CTTBVED.] 
Diameter 
breast 
high- 
Maine. 1 Xew Hampshire.- New York. 3 West Virginia. 4 
Height. 
" ! 1 
Basis. Height. ! Basis. .; Height. Basis, j Height. ' Basis, j 
Inches. 
1 
2 
3 
4 
5 
6 
7 
8, 
9 
10 
11 
12 
13 
14 
15 
1::::;: 
19 
23 
21 
22 
23 
24 
25 
26 
27 
Feet. 
12 
IS 
24 
29 
34 
38 
42 
46 
50 
53 
56 
59 
62 
5 
3 
74 
3 
Trees. 
Feet. 
11 
Trees. 
Feet. 
11 
Tree-'. 
Feet. 
10 
16 
22 
Trees. 
17 
23 
29 
17 
23 
29 
34 
39 
43 
47 
50 
53 
56 
53 
60 
62 
64 
65 
65 
2 
71 
1 3 
74 
76 
::; 
28 
3 34 
£ 
19 
55 
37 
29 
18 
23 
15 
5 
4 
2 
1 
34 
40 
46 
51 
56 
61 
66 
71 
75 
79 
82 
S6 
89 
92 
95 
97 
100 
102 
104 
105 
107 
109 
110 
111 
112 
113 
114 
115 
116 
117 
1 
3 
1 
5 
12 ! 
26 j 
34 
42 
36 
46 
22 
39 
20 
29 
16 
27 
IS 
21 
13 
S 
9 i 
I 
9 
6 
2 I 
2 
6 
8 
13 
17 
31 
21 
23 
19 
24 
13 
13 
13 
19 
5 
7 
33 
43 
46 
50 
53 
56 
53 
61 
63 
65 
67 
63 
69 
71 
7? 
21 
36 
76 
75 
87 
76 
87 
54 
63 
33 
36 
24 
21 
13 
9 
79 1 5 
81 ! 4 
83 ; 4 
84 ; 1 
S6 1 
72 
73 
7-1 
3 
3 
1 
1 
74 
75 
75 
87 
3 

28 
29.. 
30 
31 


i 
32 
33 
: 
1 
1 
34 
260 
725 
250 
462 


1 Spruce slope type. Data collected by R. S. Hosmer. 
2 Spruce slope type. Data collected by T. S. Woolsey, jr. 
s Spruce hardwood type (dominant trees only). From da«,a collected by the Conservation Commission 
of New York. 
* Spruce slope type. Data collected by John Foley. 
In the even-aged, second-growth forests, the individual tree is not 
subjected to long or varied periods of suppression. All of the trees 
