Excerpt from Index to North American Geology, Paleontology, Petrology and Mineralogy for the Years 1892-1900, Inclusive This index comprises the indexes contained in Bulletins Nos. 130, 185, 146, 149, 156, 162, and 17 2, together with the index to the litera ture for the year 1900. It is planned to accompany Bulletin no. 188, in which will be found the bibliographic entries to which all the authors' names and the numbers in this publication refer. The subject headings, their subdivision and arrangement, are shown in the following Classified key to index. They comprise geo graphic, geologic, mineralogic, paleontologic, and petrologic sub divisions. Under Economic geology is given a list of the useful minerals and ores described in publications examined; under Miner alogy, a list of minerals described in such publications; under Pale ontology, a list of genera and species of fossils therein described; and under Petrology, a list of rocks described; reference being made in each case, by author's name and number of entry in the Bibliography, to the paper in which the fossil, mineral, or rock is described. 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.