LOXGLEAF PIXE. 
17 
Table S. — Amount of lumber actually sawed out of 16-foot longleaf pine toys 
of different sizes in band sawmill (Louisiana) and comparison with the 
Doyle-Scribner scale. 
Butt logs. 
Logs (taken above 
the butt out).i 
Top 
diam- 
Doyle 
eter 
Turpen- 
rule. 
of log. 
Untur- 
tined 
Rough 
Smooth 
pentined. 
(boxing), 
4 years. 
logs. 
logs. 2 
Ivchi-s. 
Board feet. 
6 
7 
8 
18 
27 
3S 
20 
29 
41 
16 
24 
34 
4 
9 
16 

32 
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 
216 
240 
234 
169 
18 
19 
20 
21 
245 
275 
308 
342 
270 
306 
267 
304 
344 
387 
196 
225 
256 
289 

22 
377 
432 
324 
1 The greater cut above the butt logs is accounted for by the fact that there was less defect. 
1 The smaller cut than that shown, under the heading "rough" logs is due to an increased product in 
the form of laths, etc. 
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 and loblolly pines occupy the more fertile, loamy, and 
humus soil. The figures of 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 (PI. I). Had there been a con- 
siderably 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 produc- 
tion of timber. 
Table 9 shows for different ages of stand and various lands 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 
85927°— 22 3 
