Everything about Birch Bark totally explained
Birch bark or
birchbark is generally understood to be the
bark of the
Paper Birch tree (
Betula papyrifera), or sometimes of related species such as
Gray (Wire) Birch (
Betula populifolia).
The strong and water-resistant cardboard-like bark can be easily cut, bent, and sewn, which made it a valuable building, crafting, and
writing material, since
pre-historic times. Even today birch bark remains a popular material for various
handicrafts and arts.
Birch bark also contains substances of medicinal and chemical interest. Some of those products (such as
betulin) also have fungicidal properties that help preserve bark artifacts, as well as food preserved in bark containers.
Collection and storage
Birch bark can be removed fairly easily from the trunk or branches, living or recently dead, by cutting a slit lengthwise through the bark and pulling or prying it away from the wood. The best time for collection is
spring or early
summer, as the bark is of better quality and most easily removed.
Removing the outer (light) layer of bark from the trunk of a living tree may not kill it, but probably weakens it and makes it more prone to
infections. Removal of the inner (dark) layer, the
phloem, kills the tree by preventing the flow of
sap to the
roots.
To prevent it from rolling up during storage, the bark should be spread open and kept pressed flat.
Working
Birch bark can be cut with a sharp
knife, and worked like cardboard. For sharp bending, the fold should be scored first with a blunt
stylus.
Fresh bark can be worked as is; bark that has dried up (before or after collection) should be softened by steaming, by soaking in warm water, or over a fire.
Uses
Birch bark was a valuable construction material in any part of the world where birch trees were available. Containers like wrappings,
bags,
baskets,
boxes, or
quivers were made by most societies well before
pottery was invented. Other uses include:
- In North America, the native population used birch bark for canoes, wigwams, scrolls, ritual art (birch bark biting), maps (including the oldest maps of North America), torches, fans, musical instruments, clothing, and more.
- In Scandinavia and Finland, it had many uses, including roofs, boxes, casks and buckets, fishing implements, shoes (as used by the Egtved Girl), etc..
- In Russia, many birch bark documents have survived from the Middle Ages.
- In Afghanistan, the oldest known Buddhist manuscripts (some of the Gandharan Buddhist Texts) were written on birch bark.
Birch bark also makes an outstanding
tinder, as the inner layers will stay dry even through heavy rainstorms. To render birch bark useless as tinder, it must be soaked for an extended period.
Further Information
Get more info on 'Birch Bark'.
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