Within recent years commendable efforts have been made to use the wood
as well as the bark. One of the first steps in that direction was to
overcome the prejudice against the wood. It was long considered to be
valueless. That belief was founded on the single fact that this oak is
difficult to season. Few woods in this country check as badly as this,
when it is left exposed to sun and wind after the bark has been removed.
It checks both radially and along the annual rings. The medullary rays
are broad and extend much of the distance from the center to the
outside. These are natural lines of cleavage when the log begins to
season and the internal stresses develop. It must be admitted that the
prospect of making anything out of timber of that character is
discouraging; but it has been accomplished, and tanbark oak is now a
material of considerable value.
The wood has about the strength and stiffness of white oak, while it is
four pounds lighter per cubic foot. The structure is similar to that of
California live oak, but the pores of tanbark oak are smaller. They run
in rows from center to circumference. The medullary rays are broad
enough to show well in quarter-sawing, but the wood’s appearance when so
worked is not wholly satisfactory. The exposed flat surfaces of the
rays show a faint purplish or violet tinge which is considered
objectionable. But when the wood is worked plain it is dependable and
substantial. It makes good flooring, fairly good furniture, finish,
vehicles, and agricultural implements. It is perishable when placed in
damp situations, and this detracts somewhat from its value as railway
ties; but the wood’s porous nature indicates that it will readily yield
to preservative treatment.
Since the value of the wood is coming to be understood it is to be
expected that less of it will be destroyed than formerly, and that
second growth will be given opportunity to hold the ground when old
stands are cut. The tree is a prolific seeder, but not every year, and
seedlings come up abundantly in sheltered places. Sprouts rise from
stumps and grow to vigorous trees. It would seem, therefore, that the
tanbark oak will hold at least part of the ground where nature planted
it.
Public-domain text, read in full here on John Shaqi.
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