Book excerpt: Excerpt from Progress Reports of Experiments in Dust Prevention and Road Preservation, 1916 This experiment was similar in all respects to experiment N o. 7, except as follows: The surface treatment consisted of a single appli cation of hot residual asphaltic petroleum, at, the rate of gal lon per square yard, with a covering of pea gravel. A thin coat of dry sand-clay, of very homogeneous quality was applied over the surface treatment without any additional oil, and rolling Completed the experiment. 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.