Page:Timber and Timber Trees, Native and Foreign.djvu/288

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268
TIMBER AND TIMBER TREES.
[CHAP.

texture to the Bermudian, and is well adapted for the same kind of employment.

The Spaniards formerly used Cedar to a great extent in ship-building; and the "Gibraltar" and other large ships of theirs were found, on being taken to pieces, to have much of this wood in them, in a sound state.

Cedar is found in India, Japan, Australia, and Van Diemen's Land.

The same rule prevails in the market with reference to the sale of Cedar as with Mahogany, namely, that of deducting about one-third from the calliper measurement for irregularity of manufacture, shakes, defects, centres, saw-kerfs, &c. Pencil Cedar is classed No. 3; Red Cedar, No. 6; and White Cedar, No. 17, among timbers used in ships, in Lloyds' rules for ship-building.

Table CXLII.— Cedar (Cuba).
Transverse Experiments.
Number
of the
specimen.
Deflections. Total
weight
required
to break
each
piece.
Specific
gravity.
Weight
reduced
to
specific
gravity
600.
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 2.250 .050 4.350 530 372 855 132.50
2 2.350 .300 4.350 555 386 863 138.75
3 2.000 .250 4.250 630 530 713 157.50
4 2.250 .250 4.250 560 504 666 140.00
5 2.250 .350 4.350 550 416 793 137.50
6 2.500 .350 4.650 535 425 755 133.75
Total 13.600 1.550 26.200 3360 2633 4645 840.00
Average 2.266 .258 4.366 560 439 774 140.00

Remarks.—All broke with a short fracture.