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Excerpt from Variation in Animals and Plants The measurement of correlation - Calton's function - Cor relation between various organs ih man, in local races of the shrimp, and in crabs - Comparison between primitive and civilised races of man - Correlation between morpho logical characters and the reproductive system - Genetic Selection in man - Especial fertility of type forms in cer tain plants - Evolution in the Peppered moth - Parallel variation - Importance of mathematical treatment of varia tion. 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.