MILL TALLIES 
153 
form of manufacture. When boards in this form are sur¬ 
veyed they are measured at the average width, inside bark, 
on the narrow side, without discount for crooks. 
This practice has brought about great economy in the 
use of timber, and when done with thin saws, has secured 
from logs a far greater product than current scale rules 
give. Several of the tables given herewith are of special in¬ 
terest in this connection. In all these tables top diameter 
means diameter of the upper end of the log inside bark. 
TABLE II 
Yield in inch boards of second growth white pine logs, 
sawed with a circular saw cutting \-inch kerf. Greater part 
of boards not edged, but measured for width at an average 
width, inside bark, on narrow side, without discount for 
crook. 
Based on 1180 logs. From Massachusetts State Forester. 
Length of Log — Feet 
Top 
Diam. 
Inches 
10 
12 
14 
16 
Vol. 
Vol. 
Vol. 
Vol. 
Bd. ft. 
Bd. ft. 
Bd. ft. 
Bd. ft. 
4 
9 
13 
17 
21 
5 
13 
17 
21 
26 
6 
17 
22 
27 
32 
7 
23 
29 
35 
40 
8 
30 
37 
44 
51 
9 
39 
47 
55 
64 
10 
48 
58 
68 
79 
11 
58 
70 
82 
98 
12 
69 
83 
97 
115 
13 
80 
96 
113 
136 
14 
92 
111 
131 
158 
15 
104 
129 
150 
180 
16 
117 
146 
170 
• 205 
17 
131 
165 
192 
230 
18 
184 
220 
256 
As the edged lumber was taken from the larger and 
straighter logs and after those logs had been sided on the 
carriage and turned down, the yield was probably as large 
as if all boards had been left round-edged. 
