%0 Journal Article
%T Observations of the Magnetic Dip, Made at Several Positions, Chiefly on the South-Western and North-Eastern Frontiers of the United States, and of the Magnetic Declination at Two Positions on the River Sabine; In 1840
%J Transactions of the American Philosophical Society
%D 1846
%A Graham, James D.
%V 9
%N 3
%P 329-380
%X <p>[Abstract unavailable]</p>
%G 
%I American Philosophical Society
%@ 0065-9746
%U http://dx.doi.org/10.2307/1005362