Excerpt from The Naval Tracts of Sir William Monson, Vol. 3: In Six Books; Edited, With a Commentary Drawn From the State Papers and Other Original Sources The theory of the climacteric is Pythagorean and perhaps derived primarily from Chaldaean lore. Every seventh year of life was supposed to be peculiarly dangerous to bodily health, and a survival of the belief may still sometimes be noticed in the popular impression that a total change of the bodily tissues is completed by the end of every seventh year. It is difficult to decide from the text whether Monson, notwithstanding his definite statement, understood the seventh, the ninth, or the sixty-third year to be the dangerous one. 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.