XXVI.] 
TE WART. 
189 
Table XCIII. 
Tensile Experiments. 
Number 
of the 
specimen. 
Dimensions 
of 
each piece. 
Specific 
gravity. 
Weight the 
piece 
broke with. 
Direct 
cohesion on 
1 square inch. 
Inches. 
lbs. 
lbs. 
7 
/ 
II47 
32,580 
8,820 
8 
1184 
44,5 20 
11,130 
9 
2 X 2 X 30 
1173 
46,900 
11,725 
10 
II70 
34,160 
8,540 
11 
II47 
34,72° 
8,6So 
12 
II94 
51,240 
12,810 
Total . . 
7015 
244,120 
61,705 
Average . 
II69 
40,687 
10,284 
Table XCIV. 
Vertical Experiments on cubes of -— 
Number 
of the 
specimen. 
1 Inch. 
2 Inches. 
3 Inches. 
4 Inches, 
Crushed with 
Crushed with 
Crushed with 
Crushed with 
13—16 
17—20 
21, 22 
23 , 24 
Tons. 
4‘ooo 
4-500 
4-625 
4750 
Tons. 
16-875 
16-750 
16-500 
I 7 -OOO 
Tons. 
37-625 
33 -I 25 
Tons. 
67 - oo 
64-25 
Total . . 
I 7-875 
67-125 
70-75 
I 3 I -25 
Average . 
4-469 
16-781 
35775 
65-625 
Do. per in. 
4-469 
4-195 
3 - 93 I 
4-102 
E - 776990. S = 2701. 
THE JARRAH, OR MAHOGANY TREE 
(Eucalyptus marginata), 
is also found in Western Australia, where it is said to be 
very abundant. It is of straight growth and very large 
