Large oaks are felled, because the bark can not be stripped from the trunks in any other way, and small trees are not spared. The peelers often do not take the trouble to cut them down, but strip off the bark as high as a man can reach, and leave them standing. A future tree is thus destroyed for the sake of a strip of bark a few feet long. Such trees live a year or two, sometimes several years, before yielding to the inevitable. Usually, as a last expiring effort, they bear an abnormally large crop of acorns. That performance, in the language of the bark peelers, is “the last kick.” A tanbark slashing, when the peelers are ready to abandon it, is a sorry spectacle. The barkless and sun-cracked trunks strew the ground, the tops and limbs are piled in windrows, the small peeled trees stand dying, and the last ricks of bark have been sledded down the tote roads, marking the close of operations in that district. A few months later, when fire runs through, the end of the tanbark oak on that tract is accomplished.
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.