Page:Timber and Timber Trees, Native and Foreign.djvu/95

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XII.]
BRITISH OAK.
75

Premium prices were until lately paid for logs suitable for the stems and stern-posts, and also for logs having compass form suitable for the frames of ships (Figs. 18 and 19); but this is no longer necessary, as the supply is fully equal to the demand for these particular services.

It is, of course, understood that the wants of the private trade are as well met as those of the royal navy, nothing being required by the navy specification other than is afforded by the ordinary growth of the tree.

Thick-stuff and plank is supplied to the navy according to the following specification:—

Thickness. Shortest
length.
To average
in length
at least
Breadth
between the
sap at 24 ft.
To be
measured as far
as it holds
sap.
Remarks.
Inches. Feet. Feet. Inches. Inches.  
10.0 24 28 11 8 Thick stuff, 4½ in.
and upwards, is
measured in cubic
feet.
9.0 11 8
8.0 11 8
7.0 9 7
6.0 9 7
5.0 9 7
9 7
4.0 8 6 Plank, 4 to 2 in
inclusive, is
measured in
superficial
feet of its
thickness.
8 6
3.0 20 7[1] 6
7* 6
2.0 7* 6
  1. At 20 feet.

All the thick-stuff and plank to be cut straight, or nearly so, and of parallel thickness, and to be measured for breadth at the middle, or half the length, taking in half the wanes, provided the breadth, clear of sap, is within two inches of the breadth at which it is to be received; but no thick-stuff the breadth of which in