Excerpt from Bulletin of the Southern California Academy of Sciences, Los Angeles, California, Vol. 28: Jan-April, 1929 Occasionally the two types of markings are superimposed. Small tooth abrasions may be found on the margins Of an area from which a flake has been broken, or a large abrasion may be traversed by a groove. It is apparent also that the mammals intent upon breaking or gnawing a particular bone found a convenient grasp along the more pronounced borders. For the latter are often scarred. 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.