Excerpt from Flight and Attack Behavior of Mountain Pine Beetles in Lodgepole Pine of Northern Utah and Southern Idaho In each of the 3 study years, beetle emergence followed a period of relatively warm, dry weather. Reid (l962a) also found that the flight period usually began after a period of relatively high temperatures and abundant sunshine. 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.