Page:Timber and Timber Trees, Native and Foreign.djvu/167

---

---

Table LXVIII.—African (Africa).
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.
1	2.25	.10	5.500	1,301.00	982.0	1325.0	325.25
2	2.50	.05	4.250	971.00	1086.0	894.0	242.75
3	2.50	.05	5.750	1,231.00	1008.0	1221.0	307.75
4	2.00	.00	5.350	1,086.00	988.0	1099.0	271.50
5	1.75	.00	4.750	1,014.00	934.0	1085.0	253.50
6	2.50	.10	5.250	1,046.00	962.0	1087.0	261.50
Total	13.50	.30	30.850	6,649.00	5960.0	6711.0	1,662.25
Average	2.25	.05	5.142	1,108.16	993.3	1118.5	277.04

Remarks.—Nos. 1, 3, and 4 broke with a long fracture; 2, 5, and 6, short, but fibrous.

Table LXIX.
Tensile Experiments.

Number of the specimen.	Dimensions of each piece.			Specific gravity.	Weight the pieces broke with.	Direct cohe sion on 1 square inch.
	Inches.				lbs.	lbs.
7	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	2 × 2 × 30	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \ \end{matrix}}\right.}$	982	30,800	7,700
8				1008	43,400	10,850
9				934	19,040	4,760
10				962	19,600	4,900
Total	...			3886	112,840	28,210
Average	...			971.5	28,210	7,052