Excerpt from Library of Popular Science: Mineralogy Taking this view of its importance and being aware of the want of a popular introduction to the subject, I have willingly responded to Messrs. Whittaker's request that I should add a volume on mineralogy to their Library of Popular Science. It is my pleasing duty to acknowledge Messrs. Mac millan's courtesy in permitting me to reproduce figures that have appeared in books published by their firm. Some Of the illustrations are taken from photographs of specimens in the Museum of Practical Geology. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.