Oak bark

“ A thriving oak tree of 100 years will still continue to increase the thickness of the valuable part of the bark on the stem, although part of the {155} outer layers or cuticle may lose vitality, and become corky. We have taken down a luxuriant growing oak, exceeding three feet in diameter, the living bark of whose stem was about two inches in thickness, resembling thick plank, and which was considered by the tanners much stronger in quality than bark of younger growth. ”

“ Oak is usually felled in the spring when the sap is rising, to allow of the easier removal of the bark for tanning. It is a pretty sight to see, amidst the greenery of the standing trees, the stripped and gleaming trunks and larger limbs stretched upon the ground, with the neatly piled stacks of bark arranged for the air to draw through and dry them before removal. This is called "rining" in the New Forest, and good wages are earned at it by the men employed. ”

“ The wood makes excellent fuel, and is much used for that purpose in some of the large cities of America. The bark, too, is excellent for tanning—almost equal to that of the oak.
The “red birch” is still another species, which takes its name from the reddish hue of its bark. This is equal in size to the canoe-birch, often growing seventy feet high, with a trunk of nearly three feet diameter. Its branches are long, slender, and pendulous; and it is from the twigs of this species that most of the “birch-brooms” used in America are made. ”

“ At its best it is usually about ninety feet high and five or six feet in diameter, though you may find specimens here and there considerably larger than this. It is as massive and suggestive of enduring strength as an oak. About two-thirds of the trunk is commonly free of limbs, but close, fringy tufts of spray occur nearly all the way down to the ground. On trees that occupy exposed situations near its upper limit the bark is deep reddish-brown and rather deeply furrowed, the main furrows running nearly parallel to each other and connected on the old trees by conspicuous cross-furrows. ”

“ The galls are pounded and boiled, and into the infusion thus made the stuffs about to be dyed are dipped,'"
"I should think," said Clara, "that people would plant oak trees everywhere, when they are so useful. Is anything done with the bark?"
"Yes," said her governess; "the bark, which is very rough, is valuable for tanning leather and for medicine. The element which has the effect of turning raw hide or skin into leather is called tannin; it is also found in the bark of some other trees and in tropical plants." ”

“ The families or breeds which we have observed in the indigenous oak resemble what are found among almost every kind of vegetable, and graduate into each other,—those farthest removed in appearance, no doubt having power to commix by the pollen. The most remarkable distinction we have observed is in the colour of the bark, whether inclining to white or black. ”

“ Then the red oak bark, which had been peeled in long strips from the trees, hav [35] ing arrived, a layer of the bark was placed smooth and even in the bottom of the vat, a layer of hides was stretched over the bark, another layer of bark was put in position, then another of hides, and so on, until the rough vat was filled with hides and bark,—the bark being used just as it came from the trees. Water was poured into the vat, and its contents were left to steep from three to six months, according to the fancy of the tanner. ”

“ Again some have thin bark, such as bay and lime; others have a thick bark, such as the oak. And again some have smooth bark, as apple and fig; others rough bark, as 'wild oak' (Valonia oak) cork-oak and date-palm. ”

“ Its range covers several thousand square miles, and the stand is fairly good on much of it. But on the other hand, the destruction of timber to secure the bark has been excessive. What occurred with chestnut oak and hemlock in the East, is occurring with tanbark oak in the West. Trees are cut and peeled, and are left by thousands [314] to rot in the woods, or to feed fires and make them more destructive. The bark peelers do their principal work in the California redwood region, because there the oak is at its best. Economic conditions make the salvage of the trunks impossible. ”

“ The amount of rotting wood equals the yearly growth. Now, I want to show you the worst enemies of the trees. Here's a big white oak, a hundred and fifty years old. It's almost dead. See the little holes bored in the bark. They were made by a beetle. Look!”
I swung my hatchet and split off a section of bark. Everywhere in the bark and round the tree ran little dust-filled grooves. I pried out a number of tiny brown beetles, somewhat the shape of a pinching-bug, only very much smaller. ”

“ The point of a knife easily reaches it; cutting through a deep crack in the bark, and no mistake is possible, for no other oak has the yellow layer of bark. The tree may be identified by leaves, flowers, and fruit, but the process is not always easy, for other members of the black oak group bear more or less resemblance to this one. ”

“ It rises tall and straight; its height 60, 70 or 100 feet, its leaves somewhat like those of the chestnut. The bark is light gray, almost white; the acorns are small and grow close to the branch. The bark is rich in tannin, the wood used in cooperage. The range of the tree is from Vermont to Alabama and westward, and it is found at its best in the mountains of Tennessee and North Carolina. The live oak is a beautiful southern form of oak, its leaves evergreen. The range is from Virginia southward near the coast to Florida, where the trees are especially^ abundant, and west to Mexico. ”

“ Smooth, glossy twigs, move apt to be ridged than those of the white oak. Alternate leaf-scars. The acorn is covered nearly halfway with a thick cup. The kernel is sweetish and edible.
The chestnut oak is distinguished in winter by its beautiful smooth bark and by its pointed buds, entirely unlike those of the other white oaks. It sometimes grows to be a large tree, but in New England it is usually middle-sized or small.
The wood is heavy, hard, strong, and close-grained, and is used for making fences, railway ties, and for fuel. The bark is rich in tannin, and is used for tanning leather. ”

“ While this grows, it increases by a living layer of cork-cambium on its inner face, but it usually dies after a few years. In some trees it goes on growing for many years. It forms the layers of bark in the Paper Birch and the cork of commerce is taken from the Cork Oak of Spain. The green bark is of cellular tissue, with some green coloring matter like that of the leaves; it is at first the outer layer, but soon becomes covered with cork. It does not usually grow after the first year. Scraping the bark of an old tree, we find the bark homogeneous. ”

“ The swamp oak differs materially from the others both in the shape of the leaf, which is smaller, and in the bark, which is smoother; and likewise as it grows only in a moist gravelly soil. It is esteemed the toughest of all woods, being so strong yet pliable, that it is often made use of instead of whalebone, and is equally serviceable. ”

“ The 'broad-leaved' oak (scrub oak) [14] comes second as to straightness of growth and length of timber to be got from it, but for use in building it is the worst next after the sea-bark oak, and it is even poor wood for burning and making charcoal, as is also that of the sea-bark oak, and next after this kind it is the most worm-eaten. For the sea-bark oak has a thick trunk, but it is generally spongy and hollow when it is thick; wherefore it is useless for building. Moreover it rots very quickly, for the tree contains much moisture and that is why it also becomes ”

“ Other things are also tanned for the purpose of preserving them, as fishing-nets and boat-sails. This use of the bark of the oak makes it a very valuable commodity; and you may see people in the woods carefully stripping the oaks when cut down, and piling up the bark in heaps. ”

“ When these crossings of poles are lashed together with wet bark fiber, it is easy to get a tight knot which shrinks when dry and makes an even tighter joint. The bark of an elm or a balsam, cut into [423] broad strips is then sewed into place on the framework with basswood string. In olden times, an oak wood awl was used to punch holes in the bark, but at Leech Lake when they made the writer’s wigwam, as shown in plate 58, figure 2, they used an old file end for an awl. ”

“ The tall blue gums stretch towards the sky with their snow-white branches gleaming among the shadows and filtering sunlight, and here and there a mighty giant of the forest waves long, tattered, shroud-like strips of brown bark that have been cruelly stripped from their branches by the forest storms. ”

“ The bark is light yellowish-grey, translucent, horny, shrivelled, knotted and partially annulated. Very frequently a keel-shaped ridge occurs, running like a shrunken sinew through the principal root; it has no connexion with the wood, but originates in a one-sided development of the liber-tissue. The bark encloses a pure, white woody column about as thick as itself. After the root has been macerated in water the bark is easily peeled off, and the peculiar structure of the wood can then be studied. ”

“ They seem to leap and spring into the air, often leaning and curving upward from the very root, sometimes in forms that would be almost grotesque were it not for the never-failing rightness of free-swinging poise and perfect balance. The tints of the stem give a precious lesson in colour. The white of the bark is here silvery-white and there milk-white, and sometimes shows the faintest tinge of rosy flush. Where the bark has not yet peeled, the stem is clouded and banded with delicate grey, and with the silver-green of lichen. ”

“ The bark looks shriveled and withered, the twigs seem dry when cut, and resist the knife; when thawed by the fire, or on the return of spring weather, the bark seems loose, and the inner bark, instead of being greenish-white, becomes brown, and the whole tree looks as though it was dead. In old trees, large portions of the bark start from the stem and large limbs, and hang loosely for awhile and then fall off. The buds alone retain their vitality, and upon the return of spring they sometimes succeed in establishing the necessary connection with the soil, and restore the circulation of the sap ”

“ As the years roll by, these trunks gradually bleach out to almost a grayish white, the charred, blackened bark is all weathered off, and gradually such trees fall, as they decay at the stump, in every conceivable direction upon the ground, across one another, like so many jack-straws, making a perfectly impassable barricade to human travel without tedious labor. A brisk growth of small poplars, birch, and willow springs up in place of the original spruce forest, but none of these trees and shrubs ever grow to any great size. ”

“ If it is spruce bark or any other bark you seek, hunt through the woods for a comparatively smooth trunk and proceed in the same manner as with the birch. To take it off a standing tree, cut one circle down at the butt and another as high as you can reach (Fig. 118) and slit it along a perpendicular line connecting the two cuts as in Fig. 38. This will doubtless in time kill the tree, but far from human habitations the few trees killed in this manner may do the forest good by giving more room for others to grow. Near town or where the forests are small use the bark from the old dead trees. ”

“ The bark always grows up again, and its quality improves with the increasing age of the tree. It is commonly singed a little over a strong fire or glowing coals, and laid to soak a certain time in water, after which it is placed under stones in order to be pressed straight.
This tree, as well as its use, was known to the Greeks and the Romans. By the former it was called phellus. Theophrastus reckons it among the oaks, and says that it has a thick fleshy bark, which must be stripped off every three years to prevent it from perishing. ”

“ Its leaves were nearly cordate, or heart-shaped, and of a very dark-green colour; but that which rendered it most conspicuous among the other trees of the forest was the shining white or silver-coloured bark that covered its trunk, and its numerous slender branches. This bark is only white externally. When you have cut through the epidermis you find it of a reddish tinge, very thick, and capable of being divided into several layers. The wood of the tree makes excellent fuel, and is also often used for articles of furniture. ”

“ Give one sheet to each tree, and upon it paste a piece of the bark, a leaf, and a blossom. The bark should not be taken from the tree where it is too coarse and clumsy, but where it is nearly smooth and perfect, and gives the best idea of the tree; nor should too thin a piece be taken, as when it gets dry it may wrinkle up and crumble to pieces. It may be well to take off with the bark a thin layer of the wood to stiffen it and keep it smooth. A piece of bark about three inches long and two wide would be of a good size. ”

“ It is a great pity that so many beautiful trees are girdled and killed to supply the needs of camping parties. If the bark were stripped but part way around it would not kill the tree.
The yellow birch has a silvery yellow tint in the outer bark, which curls back in ragged ribbons until the tree gets old. The red birch writes its name in the rusty red colour of its papery bark, which splits into tatters in true birch fashion, and flutters the ragged ends from each branch throughout the year. ”