Excerpt from Heredity and Human Affairs Genetics stands second to physics as the most fruitful department of science during the last quarter of a century. Physics has given us a new chemistry, a new thermo dynamics, in fact a wholly new philosophy as to the nature of matter. It has made possible such marvellous mechanical inventions as the aeroplane, the cinema, and the radio. The achievements of genetics are not so spectacular, but hardly less broadly constructive. The established facts concerning variation, heredity, and development provide a new orien tation in sociology. 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.