Excerpt from Impotence and Sterility: With Aberrations of the Sexual Function and Sex-Gland Implantation Cases occasionally occur in which a differential diagnosis is impossible until the age of puberty, when certain sexual attributes - menstruation, the growth of beard, changing voice, etc., as the case may be - decide the question of sex. In very rare instances the sex cannot be decided during life. 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.