XI. DYEING OF WOOL AND FUR; AND OPTICAL PROPERTIES
OF COLOURS 100

INDEX 117




THE CHEMISTRY OF HAT MANUFACTURING




LECTURE I

TEXTILE FIBRES, PRINCIPALLY WOOL, FUR, AND HAIR


_Vegetable Fibres._--Textile fibres may be broadly distinguished as
vegetable and animal fibres. It is absolutely necessary, in order to
obtain a useful knowledge of the peculiarities and properties of animal
fibres generally, or even specially, that we should be, at least to some
extent, familiar with those of the vegetable fibres. I shall therefore
have, in the first place, something to tell you of certain principal
vegetable fibres before we commence the more special study of the animal
fibres most interesting to you as hat manufacturers, namely, wool, fur,
and hair. What cotton is as a vegetable product I shall not in detail
describe, but I will refer you to the interesting and complete work of
Dr. Bowman, _On the Structure of the Cotton Fibre_. Suffice it to say