Excerpt from A Guide to Practical Navigation: Containing the Rules and Methods of Solving Problems in the Most Practical Manner; The Simplest and Most Complete Method for Finding a Ship's Position at Sea For finding latitude by stellar altitudes (which circumstances not infrequently render desirable at sea) I have referred to the American Ephemeris for the declination of the fixed stars instead of to the English tables; and have also followed the star-notation of the for mer. I have used a portion of the latter only in the problems for exercise in this work. I would call the student's special attention to the system of finding simultaneously latitude and longitude by double altitude; a system not to be found in any American work that I have seen, and one upon which too much stress can scarcely be laid. 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.