.
[Reprinted from the American Journal of Economics & Sociology, May, 1946, pp. 497-507]
[Page 497 ] * [Page 498 ] * [Page 499 ] [Page 500 ] * [Page 501 ] * [Page 502 ] [Page 503 ] * [Page 504 ] * [Page 505 ] [Page 506 ] * [Page 507 ]