34 
BULLETIN 606, U. S. DEPARTMENT OF AGRICULTURE. 
Table 3. — Results of penetrance tests on individual pieces — Continued. 
WHITE HEART BEECH. 
Mois- 
ture. 
Aver- 
age 
num- 
ber of 
rings 
Oven 
dry 
weight 
per 
cubic 
Time of 
treat- 
ment. 
Time required 
to penetrate 
24 inches. 
Penetrations. 
Piece No. 
First 
end. 
Second 
end. 
Aver- 
age 
lon- 
gitu- 
dinal. 
Radial. Tangential. 
n?cn. leet ' 
Aver- 
age. 
Maxi- 
mum. 
Aver- 
age. 
Maxi- 
mum. 
86 
Per ct. 
6.7 
7.6 
8 
7 
8 
Pounds. 
43.20 
42.80 
Hours. 
2 
Mn. 
Min. 
Inches. 
14.8 
18.1 
23.5 
Inches. 
0.18 
.30 
Inches. 
0.25 
. 40 
Inches. 
0.20 
.30 
Inches. 
30 
87 
.40 
88 
Comoletei 
18.8 
.24 
.32 
.25 
.35 

RED HEART BEECH. 
89 
9.0 
8.9 
17 
16 
15 
41.00 
40.60 
2 
0.50 
.43 
.57 
0.05 1 
.05 
.05 j 
0.05 
.05 
.05 
90 
91 
Average . 
.50 
.05 
.05 
WILD RED CHERRY— HE ARTWOOD. 
6 
5 
6 
23.82 
23.50 
J 
1 
2 
3.5 
I 
8. 17 Complete 
12.50 do.... 
11.50 do.... 
10. 72 
i Complete radial penetration was at least three-fourths inch. Where part of specimens showed com- 
plete radial penetration they were not included in the average. 
BIBLIOGRAPHY. 
DEPARTMENTAL PUBLICATIONS. 
Title. 
Date of 
issue. 
The Decay of Timber and Methods of Preventing It. Bureau of Plant In- 
dustry Bulletin 14 
Seasoning of Timber. Forest Service Bulletin 41 . 
Cross Tie Forms and Rail Fastenings with Special Reference to Treated 
Timbers. Forest Service Bulletin 50 
Report on Condition of^ Treated Timbers Laid in Texas, February, 1902. 
Forest Service Bulletin 51 
Wood Preservation in the United States. Forest Service Bulletin 78 
The Fractional Distillation of Coal Tar Creosote. Forest Service Circular 
80 
Quantity and Character of Creosote in Well Preserved Timbers. Forest 
Service Circular 98 
The Open Tank Method for the Treatment of Timber. Forest Service Cir- 
cular 101 . 
Brush and Tank Pole Treatments. Forest Service Circular 104 
Prolonging the Life of Mine Timbers. Forest Service Circular 111 
The Analysis and Grading of Creosotes. Forest Service Circular 112 
The Preservative Treatment of Fence Posts. Forest Service Circular 117.. 
Preservation of Piling against Marine Wood Borers. Forest Service Circu- 
lar 128 
Experiments on the Strength of Treated Timber. (Second edition.) For- 
est Service Circular 39 
1902 
1903 
1904 
1904 
1909 
1907 
1907 
1907 
1907 
1907 
1908 
1907 
1908 
1908 
