Excerpt from Proceedings of California Academy of Sciences, Vol. 6 The purpose of this paper is to place upon record the re sults of geologic and faunal studies made by the writer during the past three years in portions of the lower Cowlitz River Val ley. The area under investigation is Of Special interest because of the large number of exposures of Eocene strata and the ex ceptionally well preserved faunas contained within them. 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.