20 
BULLETIN 1061, U. S. DEPARTMENT OF AGRICULTURE 
Table 9. — Amount of lumber actually sawed out of different parts of turpen- 
tined and unturpentined longleaf pine logs of different diameters in band saiv- 
mill (Louisiana) compared with the volume estimated according to the 
Doyle rule 
Butt logs 
Logs (taken above 
the butt cut) l 
Top 
diam- 
Doyle 
eter 
Turpen- 
rule 
of log 
Untur- 
tined 
Rough 
Smooth 
pentined 
(boxing), 
4 years 
logs 
logs 2 
Board 
Board 
Board 
Board 
Board 
Inches 
feet 
feet 
feet 
feet 
feet 
6 
7 
8 
18 
27 
38 
20 
29 
41 
16 
24 
34 
4 
9 
16 
---- 
9 
51 
42 
55 
47 
25 
10 
65 
53 
72 
62 
36 
11 
81 
67 
90 
79 
49 
12 
99 
81 
110 
98 
64 
13 
118 
96 
132 
120 
81 
14 
139 
114 
156 
145 
100 
15 
163 
131 
182 
172 
121 
16 
189 
151 
210 
202 
144 
17 
18 
216 
245 
240 
270 
234 
267 
169 
196 
19 
20 
21 
22 
275 
308 
342 
377 
306 
304 
344 
387 
432 
225 
256 
289 
324 
1 The greater cut above the butt logs is accounted for by the fact that there was less defect. 
2 The smaller cut than that shown under the heading "rough logs" is due to better utilization of the 
rough logs. 
In considering the amount of saw timber per acre yielded by long- 
leaf pine, it should be borne in mind that the species belongs essen- 
tially to the poorer classes of land, large parts of which are either 
flat and poorly drained or dry and very sandy. In comparison, 
both slash ancl loblolly pines occupy the more fertile, loamy, and 
humus soil. The saw-timber yields refer to what would commonly 
be considered as very dense stands, which produce long, clear trunks, 
yielding clear, high-grade material, but of relatively small diameters 
for specified ages (PL V). Had there been a considerably smaller 
number of trees per acre than that shown in Table 1, the trees would 
earlier have reached merchantable saw-timber sizes, and, therefore, 
would have shown larger amounts per acre, at the ages, say, of 30 
to 50 years. Denser stands, however, although slower in growth, 
give at a little later age a higher total production of timber. 
Table 10 shows for different ages of stand and various kinds of 
land the approximate total yield of saw timber per acre. The 
market is accepting yellow pine lumber of poorer grades. This 
change has been rapid since the rise of the extra demand for lumber 
in about 1917. As a result, information regarding the actual cut of 
lumber per acre from young stands is frequently desired. The 
amount shown under the heading of " mill scale " is that which can 
be sawed out by using the tree above a 1-foot stump and down to 
a top diameter of 4.6 inches. It is the form of utilization now gen- 
eral in parts of New England. Another column shows the amount 
of lumber yielded per acre according to the Doyle log rule — which 
