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METALLOGRAPHY

AS A SEPARATE SCIENCE,

OR

THE STUDENT'S HANDBOOK OF METALS.

DESIGNED AS AN ELEMENTARY WORK

FOR THE USE OF SCHOOLS AND SCIENCE CLASSES,

AND CONSISTING OF

NOTES ON FIFTY-FIVE METALS,

THEIR VARIOUS PROPERTIES, THEIR HISTORY,

THE LOCALITIES IN WHICH THEY ARE FOUND,

AND THE PRINCIPAL USES TO WHICH THEY ARE APPLIED.

BY

THOMAS ALLEN BLYTH

M.A., Ph.D., F.E.I.S., F.G.S.E.,

UNIVERSITY OF GÖTTINGEN.

LONDON:

LONGMANS, GREEN, READER, AND DYER.

1871.

188. f. 37.

BEDFORD:

PRINTED BY JAMES R. PORTER, 7, HIGH STREET.

DEDICATION.

TO THE PRESIDENT, COUNCIL, AND FELLOWS

OF THE

EDINBURGH GEOLOGICAL SOCIETY.

Bedford,

January 1, 1871.

MY LORDS AND GENTLEMEN,

Permit me, most respectfully, to inscribe to you the following pages, as a trifling acknowledgment of the honour you did me on December 22, 1864, by unanimously electing me a Fellow of your Society, and, more especially, of the further honour you conferred upon me on March 22, 1866, by admitting me "to all the privileges of Life Membership," which honor, I suppose, in the words of Cæsar, ante id tempus accidit nulli.

I have the honor to remain,

My Lords and Gentlemen,

Your obedient Servant,

T. A. BLYTH.

PREFACE.

This treatise, consisting of a reprint of the author's contributions to various magazines, is issued merely as an elementary work on the science.

Metallography is simply a description of the Metals, their various properties, their history, the localities in which they are found, and the principal uses to which they are applied. The term itself, though not to be found in the smaller English dictionaries, is no newlycoined expression.

The notes on each metal, of which this work chiefly consists, were not originally intended for publication, but for the writer's own private use. Although they have been carefully revised by the author, he nevertheless believes that there are still inaccuracies to be found. Notwithstanding, however, its imperfections, it is hoped that this handbook will be found useful, easy, and well-adapted for that class of persons for whom it is now published.

18, Peel Street, Bedford,

January 1, 1871.

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