60 



BULLETIN 272, U. S. DEPARTMENT OE AGRICULTURE. 



Table 17. — Increase in board feet and money value in 10, 20, and SO years for cypress 

 trees of various diameters, at stumpage price of §5 per thousand feet. 



Present volume of tree 



(board feet) 



Annual increase in volume 



Volume in 10 years 



Volume in 20 years 



Volume in 30 years 



Present value of tree 



Annual increase in value. . 



Value in 10 years 



Value in 20 years 



Value in 30 years 



Tree diameter (breast high) (inches). 



16 



IS 



Rate of growth (years required for 1 inch increase in diameter). 



54 

 5.7 



111 

 Hix 

 225 

 -SO. 27 

 .028 

 .56 

 .84 

 1.12 



54 

 4.2 

 96 

 138 

 180 

 >0. 27 

 .021 

 .48 

 .69 

 .90 



54 

 2.8 

 82 

 110 

 138 

 SO. 27 

 014 

 41 

 55 

 69 



92 



6.7 



159 



226 



293 



SO. 46 



.034 



.80 



1.13 



1.46 



92 



5 



142 



192 



242 



$0.46 



.025 



.71 



.96 



1.21 



92 

 3.3 

 125 

 158 

 191 

 SO. 46 

 .016 

 .62 

 .79 

 .96 



141 



8.7 



228 



315 



402 



SO. 70 



.044 



1.14 



1.58 



2.01 



141 



6.5 



206 



271 



336 



SO. 70 



.032 



1.03 



1.36 



1.68 



141 

 4.3 

 184 

 227 

 270 

 SO. 70 

 .022 

 .92 

 1.14 

 1.35 



200 

 10.3 

 303 

 406 

 509 

 51.00 

 .052 

 1.52 

 2.03 

 2.54 



200 



7.8 



278 



356 



434 



SI. 00 



.039 



1.39 



1.78 



2.17 



200 



5.2 



252 



304 



356 



SI. 00 



.026 



1.26 



1.52 



1.78 



Present volume of tree 



(board feet) 



Annual increase in volume. 



Volume in 10 years 



Volume in 20 years 



Volume in 30 years 



Present value of tree 



Annual increase in value 



Value in 10 years 



Value in 20 years 



Value in 30 years 



Tree diameter (breast high) (inches). 



Rate of growth (years required for 1 inch increase in diameter). 



271 

 12.3 

 394 

 517 

 640 

 SI. 36 

 .062 

 1.97 

 2.58 

 3.20 



4 



6 



3 



4 



6 



3 



4 



271 



271 



359 



359 



359 



473 



473 



9.2 



6.2 



15.7 



11.8 



7.8 



20 



15 



363 



333 



516 



477 



437 



673 



623 



455 



395 



673 



595 



515 



873 



773 



547 



457 



830 



713 



593 



1,073 



923 



SI. 36 



SI. 36 



SI. 80 



SI. 80 



SI. 80 



$2.36 



$2.36 



.046 



.031 



.078 



.059 



.039 



.10 



.075 



1.82 



1.66 



2.58 



2.38 



2.18 



3.36 



3.12 



2.28 



1.98 



3.36 



2.98 



2.58 



4.36 



3.86 



2.74 



2.28 



4.15 



3.56 



2.96 



5.36 



4.62 



473 



10 



573 



673 



773 



$2.36 



.050 



2.86 



3.36 



3.86 



TREATMENT OF VIRGIN STANDS. 



From the lumberman's standpoint the first aim in cutting virgin 

 stands should be the complete utilization of the material taken. 

 Close utilization of the tops and butts has been practiced for some 

 years in Louisiana, and there seems no good reason why this would 

 not be equally profitable along the southern Atlantic Coast, where 

 lower transportation rates are offered to the central market region 

 in the northeastern States. 



Too often customs from the earlier and more primitive logging 

 days survive tenaciously, in spite of advancement and change in 

 economic conditions which make complete utilization of trees profit- 

 able. Considering the high value of cypress stumpage, it is believed 

 to be an actual loss under ordinary conditions to leave high stumps 

 and large sound tops. Felling-the trees at the height at which they 

 have been girdled usually results in heavy waste of sound timber. 1 



1 Girdling is done at a high point to avoid unnecessary labor. 



