Transcriber’s Notes Obvious typographical errors have been silently corrected. Variations in hyphenation other spelling and punctuation remains unchanged. In particular the words height and hight are used about equally. As hight is a legitimate spelling, it has not been changed. Some of the larger tables have been re-organised to improve clarity and avoid excessive width. The footnotes are located at the end of the book. Italics are represented thus _italic_. LEAD SMELTING AND REFINING WITH SOME NOTES ON LEAD MINING EDITED BY WALTER RENTON INGALLS [Illustration: Publisher’s Device] NEW YORK AND LONDON THE ENGINEERING AND MINING JOURNAL 1906 COPYRIGHT, 1906, BY THE ENGINEERING AND MINING JOURNAL. ALSO ENTERED AT STATIONERS’ HALL, LONDON, ENGLAND. ALL RIGHTS RESERVED. PREFACE This book is a reprint of various articles pertaining especially to the smelting and refining of lead, together with a few articles relating to the mining of lead ore, which have appeared in the _Engineering and Mining Journal_, chiefly during the last three years; in a few cases articles from earlier issues have been inserted, in view of their special importance in rounding out certain of the subjects treated. For the same reason, several articles from the _Transactions_ of the American Institute of Mining Engineers have been incorporated, permission to republish them in this way having been courteously granted by the Secretary of the Institute. Certain of the other articles comprised in this book are abstracts of papers originally presented before engineering societies, or published in other technical periodicals, subsequently republished in the _Engineering and Mining Journal_, as to which proper acknowledgment has been made in all cases.