159 
Age at Average Maximum Age at Average Maximum 
Stump. DAs.) Dake Bs: Stump. IDs Ws dBy, IDS alli 383. 
20 25 3.0 140 18.0 PANES 
40 5.0 5.8 160 2170 245 (0) 
60 7 A 8.0 180 24.4 28.8 
sO 10.0 11.9 200 28.0 BO 
100 12.4 15.0 220 31.4 36.4 
120 15.0 18.2 240 Bye 40.6 
It will be noticed that there is a difference of approximately 20 per cent. 
in diameter for any given age, between the average maximum growth and 
the average growth. Allowing for a proportionate increase throughout the 
stem, this would give a maximum volume for table three as follows: 
Volume Volume Volume 
Age B. M. Age B. M. Age B. M. 
Years. (Maxi- Years. (Maxi- Years. (Maxi- 
mum). mum). mum), 
70 12 130 205 190 642 
SO 18 140 270 200 756 
90 4S 150 330 210 870 
100 78 160 402 220 996 
110 120 170 486 230 1,146 
120 168 180 Soy 240 1,314 
This 20 per cent. increase could hardly be regarded as reliable, how- 
ever, when applied to later life of the tree. Artificial plantations both at 
home and abroad show that it is not at all out of proportion with what may 
be expected during the early life of well managed plantations. 
A study of the crowns of this plot showed the average width of crown 
to be forty feet. This would allow in a fully stocked stand, about forty mature 
trees to the acre. During the extremely early years of the stand, an acre 
would bear upwards of one thousand trees. *Mr. Earl Frothingham, Forest 
Assistant in the Forest Service, shows that from observed plots an acre 1s 
able to support seven hundred and twenty-four oak trees to the age of forty-~ 
*Second Growth Hardwoods in Connecticut, Bulletin 96, U. S. Forest Service 
by Earl H. Frothingham. Forest Assistant. 
