An Essay in Dynamic Theory ⑧ R.F. Harrod The Economic Journal, Vol. 49, No. 193. (Mar., 1939), pp. 14-33. Stable URL: http: //links.jstor.org/sici?sici=0013-0133%28193903%2949%3A193%3C14%3AAEIDT%3E2.0.CO%3B2-7 The Economic Journal is currently published by Royal Economic Society. Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/about/terms.html. jstor's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. P Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at http: //www.jstor. org/journals/res.html. Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. JSTOR is an independent not-for-profit organization dedicated to creating and preserving a digital archive of scholarly journals. For more information regarding JSTOR, please contact support @jstor.org. http: //www.jstor.org/ Mon Sep1800:2112006