United States Magnetic Tables and Magnetic Charts for 1905

Excerpt from United States Magnetic Tables and Magnetic Charts for 1905 For the methods Of Observation used in the Coast and Geodetic Survey, and for other details, descriptions of stations, etc., the reader is referred to the Annual Reports Of the Superintendent Of the Coast and Geodetic Survey. It is only possible to state here briefly that the attempt is made to secure the declination and the inclination within an absolute accuracy Of about two minutes Of arc and the horizontal intensity within about one-thousandth part. 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.