Principal facts of the earth's magnetism and methods of determining the true meridian and the magnetic declination. Reprinted from the United States magnetic declination tables and isogonic charts for 1902 (1909)
U.S. Coast and Geodetic Survey · Washington Govt. Print. Off · leaf 49
e of the stations in this region exhibit small anticlockwise motions.No station has thus far been found where the reverse motion has prevailed for any such lengthof time, as has been the case with the direct motion. Fig. 9 exhibits the curves resulting in the manner described above for… … Flo. rn.—Comparison of cur\t showing cliange in magnetic declination and dip along parallel of latitude 40° N. in 1885 with curve showing secular change at Rome. circuit of the Earth in an eastwardly direction along the parallel of latitude 40° north.The data have been scaled from Neumayers…
Magnetism, Terrestrial
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
