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.:—
| 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. | |||
| ... | 3.25 | 3.95 | 407 | 867 | 101.75 | |||
| English Oak. | 13 | 3.75 | 3.75 | 390 | 836 | 97.5 | ... | 6' |
| 14 | 3.75 | 3.75 | 400 | 866 | 100.0 | ... | 5' | |
| 15 | ... | 3.50 | 390 | 868 | 97.5 | ... | 4' | |
| 16 | ... | ... | 390 | 865 | 97.5 | ... | 3' | |
| 17 | ... | 3.75 | 390 | 860 | 97.5 | ... | 2' | |
| 18 | 2.25 | 5.00 | 480 | 910 | 120.0 | ... | 1' | |
| 19 | 2.00 | 7.00 | 740 | 900 | 185.0 | 5,320 | 1 | |
| 20 | 2.00 | 4.50 | 630 | 900 | 1577 | 4,400 | 2 | |
| 21 | 2.25 | 5.00 | 620 | 854 | 155.0 | 4,200 | 3 | |
| 22 | 3.50 | 4.50 | 470 | 864 | 117.5 | 4,340 | 4 | |
| 23 | 3.75 | 5.00 | 480 | 838 | 120.0 | 2,520 | 5 | |
| 24 | 4.00 | 4.50 | 430 | 791 | 107.5 | 2,240 | 6 | |
| The mean of 1 to 6 | 2.916 | 5.10 | 562 | 858 | 140.5 | 3,837 | ... | |
| The mean of the whole | 3.083 | 4.525 | 484 | 862.5 | 121 | ... | ... | |
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.
