Excerpt from Decay in White Fir Top-Killed by Douglas-Fir Tussock Moth A 1970 timber sale on the Mammoth Lakes District, which included part of the 1937 infestation and study area, offered an opportunity to determine if heart rots were a significant cause of defect in white fir trees 33 years after top-killing by the Douglas-fir tussock moth. Many of the pole-sized trees top-killed as a result of the severe defoliation are now of merchant able size and were included in the timber sale. 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.