32 
BULLETIN 606, U. S. DEPARTMENT' OF AGRICULTURE. 
Table 3. — Results of penetrance tests on individual pieces — Continued. 
SYCAMORE— HEARTWOOD. 
Mois- 
ture. 
Aver- 
age 
num- 
ber of 
rings 
per 
inch. 
Oven 
dry 
weight 
per 
cubic 
feet. 
Time of 
treat- 
ment. 
Time required 
to penetrate 
24 inches. 
Penetrations. 
Piece No. 
First 
end. 
Second 
end. 
Aver- 
age 
lon- 
gitu- 
dinal. 
Radial. 
Tangential. 
Aver- 
age. 
Maxi- 
mum. 
Aver- 
age. 
Maxi- 
mum. 
42 
Per ct. 
5.2 
0.1 
1.0 
'32 
32 
30 
Pounds. 
35.60 
34.40 
35.50 
Hours, 
h 
1 
2 
Min. 
Min. 
Inches. 
3.83 
2.94 
5.75 
Inches. 
0.20 
.30 
.20 
Inches. 
0.30 
.40 
.30 
Inches. 
0.20 
.30 
.20 
Inches. 
0.30 
43 
30 
44 
.30 
Average. 
4.17 
.23 
.33 
.23 
.30 
1 
LARGETOOTH ASPEN— HEARTWOOD. 
45 
27.63 
27.15 
28.40 
2 
i 
5.21 
11:83 
1.64 
0.30 
Comple 
.20 
0.40 
te 1 
0.50 
0.70 
46 
2.4 
2.2 
45 j 
47 
.30 
.25 
.40 
1 
Average. 
6.23 
.25 
.35 
.38 
1 
WHITE ELM— HEARTWOOD. 
1 
1.8 
10.5 
4.8 
16 
13 
12 
29.58 
30.61 
30.71 
1 
1 
2 
8.17 
4.17 
14.18 
0.50 
.40 
.40 
0.70 
.50 
.60 
0.60 
.50 
.60 
0.70 
2 
.60 
3 
.60 
Average. 
8.84 
.43 
.60 
.57 
.63 
GREEN ASH— HEARTWOOD. 
9 
11.2 
11.0 
.9 
12 
14 
13 
39.30 
36.50 
40.10 
1* 
2 
Immediately. . 
do .*... 
do 
8.84 
9.50 
13.50 
0.40 
0.45 
0.40 
.50 
0.50 
10 
.50 .60 
.60 
11 . 
Comple 
te 1 
10.61 
.45 
.52 
.45 
55 
HACKBERRY— HEARTWOOD. 
12 
s 
10 
10 
36.70 
36.30 
41.70 
i 
1 
2 
6.16 
14.84 
11.50 
0.30 
.40 
.30 
0.40 
.50 
.40 1 
0.40 
.40 
.30 
0.50 
13 
.50 
14 
.40 
10.83 
.33 
-.43 
.37 
.47 
HACKBERRY— 3APWOOD. 
15 
1.5 
6.0 
8 
10 
35.20 
36.40 
| 
6.16 
10.16 
0.50 
.40 
0.70 
.50 
0.60 ! 
.40 
0.70 
17 
2 1 
.50 
8.16 
.45 
.60 
.50 ] 
.60 
1 
BUR OAK— HEARTWOOD. 
is 
8.3 
8.1 
12.3 
15 
15 
16 
40.70 
41. 56 
41.10 
1 
1 
2 
0.83 
.50 
.50 
0.05 
.05 
.05 
0.05 
1 
19 
.05 
.05 
20... 
Average. 
.61 
.05 
.05 
1 Complete radial penetration was at least three-fourths inch, 
plete radial penetration they were not included in the average. 
Where parts of specimens showed com- 
