21 
i¢ Since the maximum price is paid for ten-inch lumber and 
since all stands of diameter classes from sixteen inches on- 
wards have an average width of 10” and over and produce 
progressively less lumber per acre, there is no need to consider 
these further. The larger diameter trees could not be con- 
sidered in any controlled forest, since, in order to obtain a 
large diameter, length of bole would have to be sacrificed. In 
these larger trees, as has already been mentioned, the top of 
the bole ends at the first living branch. Therefore, the large 
diameter could not be secured with a longer bole in a rotation 
of seventy years. There is another consideration, and this is 
that these larger trees are seventy years of age or slightly 
over, while the smaller diameter classes are about sixty-five 
years. However, for the present all are being considered as of 
“the same age. 
In Table XIV is given the total value per acre of a stand of 
the various diameter classes. The amount of 12” sidings 
is taken from local mill practice. The prices given for the 
average width have been averaged from actual prices ob- 
tained. The limits are actual ruling prices. 
TABLE XIV. OAK 
Av. Width Price Price Total 
D.B.H. 24° Board Ft. Yield M. Ft. Value Yield M.Ft. Value Value 
Inches Plank Per Acre 2y 3 $ 1yVv $ 3 $ 
1 6.4 23000 19,550 36 704 3450 25 86 790 
12 7.3 19,100 16,235 46 747 = 2865 ¢ 72 819 
13 8.1 17,700 15,050 51 768 2650 66 = 834 
14 8.8 16,400 14,760 53.5 790 1640 30 49 839 
15 9.5 15,700 14,130 55 777 ~—:1570 . 47 824 
16 10.2 14,900 13,410 55 738 1490 “ 45 783 
The average width of lumber from the 15” class was 9.54 
and, therefore, the price given to this class was the maxi- 
mum. The highest return comes from the 14” class, followed 
closely by the 13”; but there is, on the whole, not much dif- 
ference between the total values. 
The length of bole of the 14” class was thirty-four feet, but 
it is to be expected that under systematic management the 
forest will be able to produce a much longer bole than this. 
