THE

INDUSTRIAL

SELF-INSTRUCTOR

AND TECHNICAL JOURNAL.

CONTAINING INSTRUCTIONS IN

The Leading Branches of Technical Science and Industrial
Arts and Processes.

COMPRISING

BUILDING AND MECHANICAL DESIGN AND CONSTRUCTION—
MATERIALS USED IN THE ARTS AND SCIENCES--
MANUFACTURES-CHEMICAL

INDUSTRY-

ART MANUFACTURES-RURAL WORK-

TECHNICAL DRAWING AND DESIGN;

WITH PRACTICAL USEFUL AND TECHNICAL NOTES, FACTS, AND FIGURES,
FOR READY REFERENCE.

BY NUMEROUS PRACTICAL WRITERS AND TECHNICAL EXPERTS

Profusely Illustrated

WITH

WORKING DRAWINGS, DESIGNS, AND DIAGRAMS.

VOLUME III.

WARD, LOCK, AND CO.

LONDON: WARWICK HOUSE, SALISBURY SQUARE, E.C.,

NEW YORK: BOND STREET.

[All rights reserved.]

OXFORD