Page:Timber and Timber Trees, Native and Foreign.djvu/302

282 {| Transverse Experiments.—3rd Example. specimen. required to break each piece. to specific gravity 600. to break 1 square inch. Experiments. apparatus weighing 390 lbs. weight was removed. of breaking. cohesion on 1 square in. of the specimen.
 * colspan=2 rowspan=2|Number of the
 * colspan=2 rowspan=2|Number of the
 * colspan=3|Deflections.
 * rowspan=2|Total weight
 * rowspan=2|Specific gravity.
 * rowspan=2|Weight reduced
 * rowspan=2|Weight required
 * colspan=3|Tensile
 * With the
 * With the
 * After the
 * At the crisis
 * Direct
 * colspan=2|Number
 * colspan=2|
 * Inches.
 * Inches.
 * Inches.
 * lbs.
 * lbs.
 * lbs.
 * colspan=2|
 * 14.
 * 4
 * 2.00
 * .65
 * 3.00
 * 504
 * 562
 * 538
 * 126.00
 * 2485
 * 4.|||28
 * 15.
 * 3
 * 1.75
 * .65
 * 3.50
 * 556
 * 564
 * 591
 * 139.00
 * 2800
 * 3.|||29
 * 16.
 * 2
 * 1.50
 * .50
 * 4.75
 * 665
 * 530
 * 753
 * 166.25
 * 2870
 * 2.|||30
 * 17.
 * 1
 * 2.25
 * .85
 * 4.50
 * 498
 * 560
 * 533
 * 124.50
 * 2240
 * 1.|||31
 * 18.|||1′
 * 2.25
 * .75
 * 3.25
 * 513
 * 526
 * 585
 * 128.25
 * 1610
 * 1′.|||32
 * 19.|||2′
 * 2.25
 * .85
 * 2.75
 * 419
 * 566
 * 444
 * 104.75
 * 2150
 * 2′.|||33
 * 20.|||3′
 * 2.50
 * .75
 * 2.85
 * 421
 * 544
 * 464
 * 105.25
 * 2100
 * 3′.|||34
 * 21.|||4′
 * 2.25
 * .65
 * 3.00
 * 460
 * 564
 * 490
 * 115.00
 * 1820
 * 4′.|||35
 * colspan=2|Total
 * 16.75
 * 5.65
 * 27.60
 * 4036
 * 4416
 * 4398
 * 1009.00
 * 18075
 * colspan=2|—
 * colspan=2|Aver.
 * 2.093
 * .706
 * 3.45
 * 504.5
 * 552
 * 549.75
 * 126.125
 * 2259.37
 * colspan=2|—
 * }
 * colspan=2|—
 * colspan=2|Aver.
 * 2.093
 * .706
 * 3.45
 * 504.5
 * 552
 * 549.75
 * 126.125
 * 2259.37
 * colspan=2|—
 * }
 * }

These experiments are similar to the last, but the specimens were taken from a larger tree, and the soft wood about the pith, including the heart-shake, was allowed to drop out. In this case the woody layers were placed vertically in the machine for testing them transversely (Fig. 31). The mean results of the transverse experiments are as follows, viz.:—