Excerpt from Precious Stones: Considered in Their Scientific and Artistic Relations, With a Catalogue of the Townshend Collection Since 1882, when the Handbook of Precious Stones was published, the volume has been several times reprinted from stereotype plates. Occasionally a few alterations and corrections were made in the text, but no opportunity occurred to improve the arrangement of the work Or to add fresh material. The present issue, however, represents a thoroughly revised edition. A large number of paragraphs have ...
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Excerpt from Precious Stones: Considered in Their Scientific and Artistic Relations, With a Catalogue of the Townshend Collection Since 1882, when the Handbook of Precious Stones was published, the volume has been several times reprinted from stereotype plates. Occasionally a few alterations and corrections were made in the text, but no opportunity occurred to improve the arrangement of the work Or to add fresh material. The present issue, however, represents a thoroughly revised edition. A large number of paragraphs have been wholly rewritten, while so many additions have been made to the accounts given of the difierent kinds of precious stones and other beauti ful minerals that the 112 pages of the original handbook have been increased to 140. Among the minerals which have now received fuller treatment may be named - diamond, sapphire and ruby, and the diflerent varieties of garnet and of zircon. But readers who desire to make themselves more intimately acquainted with the optical properties, the crystal-forms and intimate structure, the modes of occurrence and formation and the chemical composition and constitution of precious stones, will find it necessary to turn to works in which full details of these subjects are given. I n this connection may be named the treatises of Dana, of Professor Lew-is of Cambridge, Professor M askelyne and Professor M iers, for in the pages of the present handbook only such scientific considerations find place as can be easily grasped, and which, at the same time, held) to explain the beauty of precious stones and aflord methods of identifying the difierent kinds. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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