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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This volume provides a detailed history of Henrico Parish, one of the first and most prominent parishes in colonial Virginia. Using primary source documents and extensive research, the authors trace the development of the parish from its founding in the 17th century through the Revolutionary War and beyond. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Originally published in 1920. PREFACE: Electrolytic copper refining was for so many years conducted under conditions of strict commercial secrecy that but little has been published regarding the principles of operation, as distinct from descriptions of individual plants. This littlebook comprises a series of articles, eachdealing with one of the problems of refining, which originally appeared in Chemical and Metallurgical Engineering. Whatever of value it may contain is due to the fact that it is almost entirely a record of personal experience in a field where but little literature is available. NEW YORK, December, 1920. vit LAWRENCE ADDICKS. COntents include: PREFACE vii I. METAL LOSSES 1 II. METALS IN PROCESS 18 III. TANK RESISTANCE 38 IV. CURRENT DENSITY 54 V. CURRENT EFFICIENCY 71 VI. IMPURITIES 80 VII. BY-PRODUCTS 100 VIII. FURNACE REFINING 124 IX. THE REQUIREMENTS OF REFINED COPPER 143 X. COPPER FROM SECONDARY MATERIAL 158 XI. THE POWER PROBLEM 171 XII. ELEMENTS OF DESIGN 183 XIII. APPLICATION TO OTHER FIELDS 194 INDEX. . 203