160 
five. Our analyses show that the trees in the present study did not attaln 
a diameter breast height of six inches until they were seventy years of age. 
If we allow approximately one-half of the seven hundred and twenty-four, 
or three hundred and fifty, to remain at the age of seventy, and reduce 
this number by a series of intermediate acceleration thinnings, to the final 
forty at the age of one hundred and fifty, we get the following result: 
Number Number Number Number 
Trees Age, Feet Trees Age, Feet 
Per Acre. Years. B. M. Per Acre. Years. B. M. 
(70 3,500 Thinning. 
350 + 80 5,250 (160 13,400 
| 90 14,000 | 170 16, 200 
180 18,400 
Thinning. 190 21,400 
{ 100 11,375 40 + 200 25 , 200 
175 { 110 17,500 210 29 ,000 
| 120 24, 500 220 33,200 
230 38 , 200 
Thinning. | 240 43 , 800 
J 130 14,450 
85 140 19,125 
150 PED Sy is 
While the problem of reforestation with oak is somewhat more difficult 
than that connected with coniferous plantations, nevertheless these figures 
look interesting, to say the least. It is true that there is little material that 
is actually merchantable that can be looked for under one hundred years. 
There are many poor plots of land, however, on nearly every farm in Indiana 
which at present detract from the value of the whole property. If these 
plots were planted with even so slow growing a tree as the white oak the 
result would be an increase in the value of the entire property many years 
before the trees themselves actually attained merchantable size. 
