XVIII.] 
AMERICAN WHITE OAK. 
io 5 
In the experiments that were made, it was found 
White Oak compared very favourably with all the 
foreign Oaks, but proved to be slightly inferior in 
strength to the English Oak. 
Table XXXVIII. —American (or Pasture) White Oak. 
Transverse Experiments. 
Number 
of the 
specimen. 
Deflections. 
Total 
weight 
required 
to break 
each 
piece. 
Specific 
gravity. 
Weight 
reduced 
to 
specific 
gravity 
1000. 
Weight 
required 
to break 
1 square 
inch. 
With the 
apparatus 
weighing 
390 lbs. 
After the 
weight 
was 
removed. 
At 
the crisis 
of 
breaking. 
Inches. 
Inch. 
Inches. 
lbs. 
lbs. 
I 
1-65 
•IS 
9-00 
836 
960 
871 
209-00 
2 
I-50 
•00 
8-50 
826 
988 
836 
206-50 
3 
175 
•25 
9‘25 
839 
950 
883 
209-75 
4 
175 
■10 
10-15 
882 
IOIO 
873 
220-50 
5 
2’35 
•35 
9'35 
744 
935 
795 
186-oo 
6 
2-50 
•35 
■ 6-75 
696 
1054 
660 
174-00 
Total . 
11-50 
I -20 
53 - °° 
4823 
5897 
4918 
1205-75 
Average 
1 -916 
•208 
8-833 
803-83 
982-8 
819-66 
200-96 
Remarks. —Nos. 1, 2, 5, and 6 broke with a splintery fracture, 10 to 12 inches in 
length ; 3 and 4, although splintered like the others, were not completely broken asunder. 
Table XXXIX. 
Tensile Experiments. 
Number 
of the 
specimen. 
Dimensions of 
each piece. 
Specific 
gravity. 
Weight the 
piece broke 
with. 
Direct 
cohesion on 
t square inch. 
Inches. 
lbs. 
lbs. 
7 
| 
988 
28,004 
7,001 
8 
960 
31,076 
7,769 
9 
2 X 2 X 30 
935 
26,600 
6,650 
10 
IOIO 
31,228 
7,807 
11 
950 
23,512 
5,878 
Total. . 
4843 
140,420 
35 ,io 5 
Average . 
969 
28,084 
7,021 
