Page:Timber and Timber Trees, Native and Foreign.djvu/209

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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	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	2 × 2 × 30	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right.}$	1147	32,580	8,820
8				1184	44,520	11,130
9				1173	46,900	11,725
10				1170	34,160	8,540
11				1147	34,720	8,680
12				1194	51,240	12,810
Total	...			7015	244,120	61,705
Average .	...			1169	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
	Tons.	Tons.	Tons.	Tons.
13–16	4.000	16.875	37.625	67.00
17–20	4.500	16.750	33.125	64.25
21, 22	4.625	16.500
23, 24	4.750	17.000
Total	17.875	67.125	70.750	131.25
Average	4.469	16.781	35.375	65.625
Do. per in.	4.469	4.195	3.931	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