Page:Timber and Timber Trees, Native and Foreign.djvu/218

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198
TIMBER AND TIMBER TREES.
[CHAP.

Table XCVIII.—Kari (Australia).
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 0.75 .00 5.00 820.0 957.00 855.00 205.000
2 1.25 .00 6.25 725.0 885.00 819.00 181.250
3 1.35 .10 4.60 955.0 1023.00 934.00 238.750
4 0.75 .05 7.50 840.0 987.00 851.00 210.000
5 1.00 .05 6.50 920.0 1013.00 908.00 230.000
6 1.00 .05 6.50 915.0 1023.00 903.00 228.750
Total 6.10 .25 36.35 5175.0 5888.00 5270.00 1293.750
Average 1.01 .04 6.06 862.5 981.33 878.33 215.625

Remarks.—Each piece broke with scarph-like fracture, 8 to 10 inches in length.

Table XCIX.
Tensile Experiments.
Number
of the
specimen.
Dimensions
of
each piece.
Specific
gravity.
Weight
the piece
broke with.
Direct
cohesion on
1 square in.
  Inches.   lbs. lbs.
7 2 × 2 × 30 ... 31,080 7,770
8 ... 30,800 7,700
9 ... 31,360 7,840
10 ... 31,360 7,840
11 ... 22,120 5,530
12 ... 22,960 5,740
Total ... ... 169,680 42,420
Average ... 981. 28,280 7,070