Excerpt from The Encyclopedic Dictionary, Vol. 5: An Original Work of Reference to the Words in the English Language, Giving a Full Account of Their Origin, Meaning, Pronunciation, and Use; Also a Supplementary Volume Containing New Words Min. A variety of opal occurring in concretionary forms-(tuberose or reniform), in an argillaceous shale. It is opaque, and of a dull-grayish to grayish-brown colour. 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.