200 
TIMBER AND TIMBER TREES. [chap. 
Table CL —Iron-bark (Australia). 
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 
•85 
•O 
375 
1,460 
1163 
1255 
365 - o 
2 
I - oo 
■O 
3‘50 
1,37° 
1146 
1195 
342 7 
3 
•90 
•O 
4 - oo 
1,400 
1142 
1226 
350-0 
4 
I -OO 
•O 
4 - oo 
1,400 
1116 
1254 
350-0 
Total . 
375 
•O 
* 5 '25 
5,630 
4567 
4930 
14077 
Average 
T4 
■O 
3-812 
I ,4°7'5 
1142 
1232 
351-9 
Remarks.— No. i, wiry fracture, 16 inches in length ; No. 2, wiry fracture, 12 inches 
in length; No. 3, wiry fracture, 10 inches in length; No. 4, broke short to one-third, 
depth, then splintery fracture, 10 inches in length. 
Table CII. 
Tensile Experiments. 
Number 
of the 
specimen. 
Dimensions ! Specific 
each piece. gravity. 
Weight the 
piece broke 
with. 
Direct 
cohesion on 
1 square in. 
Inches. 
lbs. 
lbs. 
5 
) UII42 
34,160 
8,540 
6 
> 2 X 2 X 30 < 1146 
26,880 
6,720 
7 
) ( ”63 
39,480 
9,870 
Total . 
3451 
100,520 
25 A 30 
Average 
_ 
; 1150 
33,507 
8,377 
Table CIII. 
Vertical or Crushing Strain on cubes op 2 inches. 
No. 8. 
No. 9. 
No. 10. 
No. 11. 
Total. 
Average. 
Ditto on 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
i square 
inch. 
18-500 
17-625 
18-500 
19-000 
73-625 
18 -406 
4-601 
E = 960740. S = 3695. 
