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They also looked at wild strains found in oak bark.
It's not beautiful to the eye, and rough as oak bark to the touch.
Their pattern of tan, brown and white make the adults difficult to see against oak bark.
For the sake of economy today, most oak bark tanning takes about 6 months.
Oak bark was harvested for tanning on a large scale.
He has a great bundle of white oak bark under his arm for a sick man, gathered this Sunday morning.
"We use finely ground oak bark from the sawmills," he said.
I could not read his face; it was about as transparent as oak bark.
His hair was the deep brown of oak bark, and though unkempt by sleep, it created a good frame for a strong face.
In Korea, oak bark is used to make shingles for traditional roof construction.
One study found that the oak bark preparation improved disease resistance in zucchini.
You can go and get the oak bark and the vellum this will take.
It prefers growing on oak bark in California, but can also be found on rock and other wood.
The strength of the galls, the acorns, and the black oak bark are never the same.
Quercitannic acid is the chief constituent found in oak barks.
Tan oak bark was used extensively in the tanning of leather at that time.
First to Nivor's for the black oak bark.
In another, oak bark is fermented in the skull of a domestic animal.
They've got to drink plenty of tannin tea from quench oak bark, too.
A little round forest house nearby, the Hermitage, had a reed roof and was covered with oak bark on the outside.
Three bronze daggerblades which were placed in leather and oak bark scabbards.
The name is derived from tannum (oak bark) used in the tanning of leather.
Cork, which is the inner layer of oak bark, has been used in various ways for thousands of years.
It was boiled in great caldrons, together with tar, tallow and oak bark.
In Presteigne many children were also absent from school collecting oak bark which they could sell to the tannery.