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(1)- Bones may be
treated with successive quantities of combined sulphurous acid and water,
from which the heat of combination has been previously dissipated, the
solution being removed after each treatment, before the bone salts dissolved
therein precipitate, and before the temperature rise above 74°F.
(2)- A process for
treating animal sinews consists in immersing animal sinews successively in
petroleum or benzene to remove the outer fleshy animal skin; in a hardening
or preserving bath, as boric acid, or alum or copper sulphate; and in an
alkaline bath to remove fatty matter from the fibrous part of the sinews.
The sinews are afterwards tanned and disintegrated.
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