154 A MANUAL FOR NORTHERN WOODSMEN 
TABLE III 
Same logs but grouped according to mid diameter outside 
bark. 
Mid 
Diam. 
Length of Log — Feet 
10 
12 
14 
Inches 
Contents — Board Feet 
5 
7 
8 
10 
6 
10 
13 
16 
7 
15 
19 
23 
8 
22 
27 
31 
9 
28 
34 
40 
10 
35 
43 
50 
11 
44 
53 
63 
12 
53 
64 
77 
13 
61 
76 
91 
14 
70 
88 
106 
15 
82 
104 
125 
16 
95 
119 
144 
17 
109 
136 
163 
18 
155 
184 
19 
173 
204 
20 
193 
226 
21 
211 
247 
22 
235 
273 
23 
256 
298 
24 
281 
328 
-25 
304 
355 
26 
384 
The figures of the above tables were closely confirmed, 
except in the smallest sizes of logs, by similar figures ob¬ 
tained by the U. S. Forest Service for the Forest Commis¬ 
sion of N$w Hampshire. The saws in this latter test cut 
J-inch kerf; 60 per cent of the product was round-edged 
stuff, the balance being squared ; 70 per cent of the lumbei 
was cut 1 inch thick, the balance and measured as 2 
inches. In the sizes under 8 inches the Massachusetts 
mills cut somewhat closer. 
