CONTENTS.

CHAPTER I.

INTRODUCTORY AND HISTORICAL.

Primitive methods of leather manufacture — Use of leather by the ancients — Progress of leather manufacture in England — Methods of production of leather — Vegetable tannages — Combination tannages — Use of aluminium, iron and chromium — Oil- and fat-leathers — Difficulties of scientific treatment PAGE [1]

CHAPTER II.

INTRODUCTORY SKETCH OF LEATHER MANUFACTURE.

The object of tanning — Washing and soaking — Removal of hair by liming — Unhairing by putrefaction — Unhairing and fleshing — Deliming — Bating, puering and drenching — The vegetable tanning process — Currying — Alum, chrome and chamois leathers PAGE [7]

CHAPTER III.

THE LIVING CELL.

The structure of cells — White blood-corpuscles — The yeast-cell — Epidermis cells — The building up of plants PAGE [10]