Excerpt from Colour in Nature: A Study in Biology Having now justified the intrusion of the bio logist into what appears to be the domain of the physicist, we are at liberty to face the phenomena of colour as they appear in organisms. As, however, the relation of colour phenomena to the theory of Natural Selection has had so much attention bestowed upon it, we do not propose, at least in the first place, to consider it here, but rather to direct attention to the Chemical, and where possible, to the physio logical aspects of the colours and pigments of organisms. In a final summary it will be necessary to consider the bearing of the facts upon theories. 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.