INCENSE CEDAE. 



Table 15. — Growth in diameter, height, and volume of incense cedar. 



[curved.] 



25 



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 

 i50 

 163 

 176 

 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 











1 Volumes given are based on volume-table values for corresponding heights and diameters. 

 ' 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. 



