Page:Timber and Timber Trees, Native and Foreign.djvu/73

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of this tree, came out with a long, clean, straight grain, as the appearance of the log had promised; but the six taken from the opposite side were not nearly so good, the grain being in each a little waved or twisted, and the fibre of no great length. Some had small pin-like knots in them, and the surface of the plank being dotted over with these, it presented a mottled appearance, somewhat resembling Bird's-eye Maple.

The specimens are numbered from the centre or pith of the tree outwards—1 to 6 and 1′ to 6″ in column 9. The results are as follow, viz.:—

Table VII.
Transverse Experiments.—3rd Example.

———	Number of the specimen.	Deflection.		Total weight required to break each piece.	Specific gravity.	Total weight required to brea 1 square inch.	Direct cohesion on the square inch	Number of the specimen in the tree
		With the apparatus weighing 390 lbs.	At the crisis of breaking.
The mean of 1' to 6'		Inches.	Inches.	lbs.		lbs.	lbs.
	...	3.250	3.950	407	867	101.75
English Oak.	13	3.750	3.750	390	836.0	97.5	...	6'
	14	3.750	3.750	400	866.0	100.0	...	5'
	15	...	3.500	390	868.0	97.5	...	4'
	16	...	...	390	865.0	97.5	...	3'
	17	...	3.750	390	860.0	97.5	...	2'
	18	2.250	5.000	480	910.0	120.0	...	1'
	19	2.000	7.000	740	900.0	185.0	5,320	1
	20	2.000	4.500	630	900.0	1577	4,400	2
	21	2.250	5.000	620	854.0	155.0	4,200	3
	22	3.500	4.500	470	864.0	117.5	4,340	4
	23	3.750	5.000	480	838.0	120.0	2,520	5
	24	4.000	4.500	430	791.0	107.5	2,240	6
The mean of 1 to 6		2.916	5.100	562	858.0	140.5	3,837	...
The mean of the whole		3.083	4.525	484	862.5	121.0	...	...

Remarks.—Nos. 13 to 17 inclusive broke very short; 18 and 19 were nearly alike and had scarph-shaped fractures 10 inches in length; 20 and 21 had long splintery fractures; 22 to 24 inclusive broke short to ¹⁄_1/6 th the depth, then long fractures.