Excerpt from Research Methods in Ecology Grateful ackwledgment for criticisms and suggestions is made to Pro fessor Doctor Charles E. Bessey and Professor Doctor Roscoe Pound, who have read the text. The author is under especial obligations to Doctor Edith S. Clements for the drawings of leaf types, as well as for reading and crit icising the manuscript. Professor Goodwin D. Swezey, Professor of As tromy in the University of Nebraska, has kindly furnished much material for the determination of the sun's altitude, and consequent light intensities, and has read the section devoted to light. Mr. George A. Loveland, Di rector of the Nebraska Section of the U. S. Weather Bureau, has contributed many helpful suggestions to the discussion of meteorological instruments. To Nella Schlesinger, Alice Venters, and George L. Fawcett, advanced stu dents in experimental ecology, the author is indebted for many experiments which have been used in the discussion of adjustment and adaptation. 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 techlogy 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.