Excerpt from Practical Lessons in Actuarial Science: An Elementary Text-Book, Containing, Also, All Mortality Tables That Have Ever Been Standard Anywhere, With Corresponding Commutation Columns AN elementary text-book in actuarial science has long been needed; and a consciousness of that need, growing out of my own experience, prompts the preparation of this book. The student has either been compelled to turn to books from which he could only pick out what he needed piece meal after a great waste of energy; or to books which were wofully incomplete; or to books which were barren of explanations intelligible to him. 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.