Excerpt from University of Oregon Publications, Vol. 1: 1919-1922<br><br>Neither in number nor in Intensity has Oregon suffered from earth quakes, and SO far the subject is one Of scientific interest only. The number of earthquakes on record to date is thirty, and these appear all to be Of tectonic origin. There is not an actual, but only an apparent seismic hiatus between California and the state of Washington.<br><br>Oregon needs at least one complete seismograph, and an accurate study of this important and interesting subject should be begun at once.<br><br>About the Publisher<br><br>Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com<br><br>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.