Excerpt from Bulletins of American Paleontology, Vol. 38: 1957-1958 The largest stream in the Cabo Blanco area is Quebrada Las Pailas, the headwaters of which are in the Coast Range kilometers due south of Cabo Blanco. The quebrada is generally dry except during heavy rains. A narrow watershed separates Quebrada Las Pailas from the coast, and the highest point of this drainage divide is occupied by the Cabo Blanco lighthouse at an elevation of approximately 135 meters. The short streams flowing north to the sea, and south to Quebrada Las Pailas, have steep gradients. The channels are usually dry, but when it rains torrentially, as it does occasionally in the wet season, run-off is rapid, and a considerable amount of sand and gravel is washed down 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.