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PRACTICAL TREATISE ON

METALLURGY.

LONDON:

PRINTED BY WILLIAM CROOKES, CHEMICAL NEWS OFFICE,

BOY COURT, LUDGATE HILL, E.C.

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LEAD, SILVER, ZINC, CADMIUM, TIN, MERCURY, BISMUTH,

ANTIMONY, NICKEL, ARSENIC, GOLD,

PLATINUM, SULPHUR.

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PREFACE.

The Treatise herewith offered to the English Metallurgist is intended to furnish him with the contemporaneous experience of metallurgical operations, acquired chiefly on the European Continent. For this purpose it has been deemed advisable to adapt the German edition of Kerl's Metallurgy, which, both here and on the Continent, is justly considered a standard work of reference on the subject.

Professor Kerl wrote this treatise partly to serve as a textbook to his lectures on Metallurgy, and this circumstance has constrained us to make some alterations in arrangement and some condensation of substance, so that the present work is confined to two volumes, whilst that of Kerl comprises four. From the great number of analyses in Kerl's book we have given only a judicious selection, and made use of the introductory part so far only as is required for elucidating the various operations; we have, moreover, omitted all reference to Assaying, as the new edition of Mitchell's Manual of Practical Assaying, fully treating of this subject, may be considered as adequately representing that branch of Metallurgy.

But our task has not been restricted to condensation and omission. Wherever desirable, we have given processes and details not to be found in Kerl's original treatise.

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