XIII.] 
FRENCH OAK. 
Table XXIV.—French 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 
1-50 
•OO 
4'35 
720 
966 
745 
180 'OO 
2 
i*35 
•05 
7-00 
930 
977 
952 
232-50 
3 
1-50 
•05 
6-05 
901 
983 
916 
225-25 
4 
1'55 
•IO 
5-50 
895 
992 
902 
22375 
5 
1-65 
•00 
7-00 
915 
979 
934 
228-75 
6 
i*35 
•OS 
6 - io 
904 
962 
939 
226-00 
Total . 
8-90 
•25 
36 -oo 
5,265 
5859 
5388 
1316-25 
Average 
1'483 
•041 
6"oo 
8773 
9763 
898 
219375 
The average of six other specimens, of equal quality to the above, gave— 
7—i2 1-583 -125 7-583 831- 1082 768 207-75 
The mean of the whole— 
i'533 '083 6-791 854 1029-5 833 213-562 
Remarks. —All the specimens broke with a fibrous fracture fully 10 inches in length. 
Table XXV. 
Tensile Expet intents. 
Number 
of the 
specimen. 
Dimension of 
each piece. 
Specific 
gravity. 
Weight the 
piece broke 
with. 
Direct 
cohesion on 1 
square inch. 
13 
14 
15 
16 
17 
18 
Inches. 
/ 
2 X 2 X 30 
' 1 
966 
979 
983 
962 
977 
992 
lbs. 
21,280 
40,040 
39,208 
27,432 
33,460 
33,040 
lbs. 
5,320 
10,010 
9,802 
6,858 
8,365 
8,260 
Total. . 
5859 
194,460 
48,615 
Average. 
976'5 
32,410 
8,102 
G 
