INCENSE CEDAR. 
25 
Table 15. — Groivth in diameter, height, and volume of incense cedar. 
[CURVED.] 
Age. 
Average 
diameter 
outside 
bark at 
breast- 
height. 
Average 
total 
height. 
Volume. 1 
Cubic 
feet 
outside 
bark. 
Board 
feet 
(Scribner 
Dec. C). 
Years. 
100 
110 
120 
130 
140 
150 
160 
170..... 
180 
190 
200 
210 
220 
230 
240 
250 
260 
270 
280 
290 
300 
310 
320 
330..... 
340 
350 
360 
370 
380 
390 
400 
Basis... 
Inches. 
13.6 
15.8 
17.8 
19.9 
21.3 
22.5 
23.6 
24.7 
25.7 
26.8 
27.8 
28.8 
29.8 
30.8 
31.7 
32.7 
33.6 
34.5 
35.4 
36.2 
36.9 
37.6 
38.2 
38.7 
39.2 
39.7 
40.1 
40.5 
40.9 
41.3 
41.6 
Feet. 
65.0 
70.0 
75.0 
79.0 
82.0 
84.0 
86.5 
88.0 
90.0 
91.5 
93.0 
94.5 
95.5 
97.0 
98.5 
99.5 
100.5 
101.5 
103.0 
104.0 
104.5 
105.5 
106.5 
107.0 
107.7 
108.5 
109.0 
109.5 
110.0 
111.0 
111.5 
32 
44 
56 
68 
80 
92 
103 
114 
126 
138 
150 
163 
178 
190 
204 
219 
234 
250 
264 
278 
290 
302 
313 
323 
333 
342 
350 
359 
367 
375 
383 
70 
100 
140 
190 
230 
270 
310 
340 
390 
440 
490 
540 
600 
670 
720 
790 
850 
900 
970 
1,030 
1,090 
1,160 
1,200 
1,240 
1,290 
1,340 
1,380 
1,410 
1,440 
1,480 
1,510 
2 360 
3 515 
i Volumes given are based on volume-table values for corresponding heights and diameters. 
2 Stump analyses. 
s Measurements. 
The period of most rapid volume growth occurs later in life than 
the period of either rapid height or rapid diameter growth. The 
maximum periodic growth is reached at an age of about 275 years, 
after which increment falls off rapidly, dropping below the mean 
annual increment at about 345 years. The mean annual increment, 
however, increases gradually until an age of about 300 years is 
reached, after which it remains fairly constant, declining but slightly 
in the next 100 years. This, it should be remembered, is true of the 
growth of individual forest-grown trees only. The growth in vol- 
ume of stands culminates much earlier and has no direct relation to 
that of individual trees. 
Table 16 shows how incense cedar compares with sugar pine and 
yellow pine in rate of growth and why it can not compete successfully 
with these species in mixed stands. 
