26 
BULLETIN 604, U. S. DEPARTMENT OF AGRICULTURE. 
Table 16. — Comparative rate of growth of sugar pine, yellow pine, and 
incense cedar. 
Age. 
Sugar pine. 
Yellow pine. 1 
Incense cedar. 
Diam- 
Diam- 
Diam- 
eter 
breast- 
Height. 
Vol- 
ume. 
eter 
breast- 
Height. 
Vol- 
ume. 
eter 
breast- 
Height. 
Vol- 
ume. 
high. 
high. 
high. 
Board 
Board 
Board 
Years. 
Inches. 
Feet. 
feet. 
Inches. 
Feet. 
leet. 
Inches. 
Feet. 
feet. 
20 
40 
60 
0.2 
2.5 
7.5 
8 
23 
45 
2.3 
6.5 
11.4 
12 
29 
57 
3.2 
6.4 
23 
80 
13.0 
72 
110 
16.1 
79 
210 
9.8 
49 
100 
18.1 
92 
240 
20.0 
94 
360 
13.6 
65 
70 
120 
22.7 
106 
490 
23.3 
104 
610 
17.8 
75 
140 
140 
26.8 
118 
850 
25.8 
112 
890 
21.3 
82 
230 
160 
30.5 
127 
1,290 
28.0 
118 
1,170 
23.6 
86 
310 
180 
33.9 
135 
1,760 
29.8 
123 
1,430 
25. '< 
90 
390 
200 
37.0 
142 
2,250 
31.3 
127 
1,640 
27.8 
93 
490 
220 
40.0 
148 
2,830 
29.8 
96 
600 
240 
260 
280 
300 
320 
42.5 
44.9 
47.2 
49.3 
51.4 
153 
158 
162 
167 
171 
3,460 
4,120 
4,840 
5,570 
6,020 
31.7 
33.6 
35.4 
36.9 
38.2 
98 
101 
103 
105 
106 
720 
850 
970 
1,090 
1,200 
340 
53.5 
174 
7,050 
39.2 
108 
1,290 
360 
380 
400 
55.5 
57.3 
59.1 
177 
180 
183 
7,740 
8,380 
9,010 
40.1 
40.9 
41.6 
109 
110 
111 
1,380 
1,440 
1*510 
i From Forest Service Bulletin 
W. Cooper. 
'Sugar Pine and Western Yellow Pine in California," by Albert 
GROWTH IN EVEN -AGED STANDS. 
Growth in diameter, height, and volume in even-aged stands is, 
as might be expected, much more rapid than that prevailing in 
virgin all-aged stands, where competition for light and growing 
space is keen. As is shown in Table 17, which is based on measure- 
ments gathered in Madera, Tuolumne, and Yuba Counties, this 
difference is considerable. Unfortunately, no mature even- aged 
stands exist, and only general conclusions can be drawn as to the 
growth in later life under such conditions. It is evident, however, 
that incense cedar would make much better growth in even-aged 
stands than in the all-aged virgin forests. 
Table 17. — Average growth of individual trees in even-aged stands; basis, 
35 trees. 
[curved.] 
Diameter 
Age. 
Total 
height. 
breast- 
high 
outside 
bark. 
Volume. 
Years. 
Feet. 
Inches. 
Cubic feet. 
10 
5.5 
20 
15.5 
3.1 
0.5 
30 
30.0 
6.3 
1.3 
40 
43.5 
9.2 
4.2 
50 
53.0 
11.7 
9.9 
60 
60.0 
13.6 
17.2 
70 
64.0 
14.9 
26.0 
80 
67.0 
15.9 
31.6 
