The border position of geography between the natural and the social sciences is fairly generally recognized. Concerned primarily with differences in the different areas of the world, geography studies both natural and cultural features. In some universities, it is included among the natural sciences, in other among the social scientists. In England and America, geographers have particularly cultivated that portion of their field which leads naturally into economics, i. e. economic geography.

R. Hartshorne (1935) "Recent Developments in Political Geography" The American Political Science Review Vol. 29 (5), p. 585