PUBLISHER'S NOTE TO THE NINTH EDITION


The continued popularity of the present work, the last edition of which
was published only a little over a year ago, continues to be a source of
gratification to the publishers, who have much pleasure in issuing the
present edition.

_January 1904._


PREFACE TO THE SIXTH EDITION

The principal changes in this edition are additions to the articles on
Gold, Cyanides, and Nickel, and a much enlarged Index. The additional
matter covers more than forty pages.

J. J. BERINGER.

CAMBORNE,
_January 1900._




PREFACE.