Excerpt from Eugenio Rignano Upon the Inheritance of Acquired Characters: A Hypothesis of Heredity, Development, and Assimilation Rignano is a student of Biology who has also the training of an engineer and physicist. His attack on bio logical problems is from that side. In this book he offers an explanation on a physical basis of assimilation, cell di vision, and the biogenetic law of recapitulation in ontog eny, and he suggests a mechanism whereby the inheritance of acquired characters may be effected. 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.