Excerpt from The Descent of Man, Vol. 2 of 2: And Selection in Relation to Sex Fishes: Courtship and battles of the males - Larger Size Of the females - Males, bright colours and ornamental appendages; other strange characters - Colours and appendages acquired by the males during the breeding-season alone Fishes with both sexes brilliantly coloured - Protective colours - The less con spicuous colours Of the female cannot be accounted for on the principle Of protection Male fishes building nests, and taking charge of the ova and young. Amphibians: Differences in structure and colour between the sexes - Vocal organs. Rep tiles: Chelonians Crocodiles Snakes, colours in some cases protective Lizards, battles Of Ornamental appendages Strange differences in structure between the sexes - Colours Sexual differences almost as great as with birds. 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.