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Excerpt from Certain Biological Principles and Their Practical Application in the Improvement of the Field Crops of Canada In the eighteenth and early nineteenth centuries. We tind many writers of note prop1 1i1nding theories as to the manner in which species have originated. L'e.\ I11iiiet (thin-tits) tried to show the influence exerted by habit and environment in inducing changes 111 the nature and form of 11 plant. But. Unfortunate he went to extremes l1v claiming that modifications acquired during 11 single life were transmitted in toto. 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.