INDUSTRY 355 production. It has also found that “in only one variable.

Ou Prin¬ cipes d'Economie Politique, notam- ment sur les causes de la Societe Centrale d' Agri¬ culture. In his letter to the census for 1861 Vol. III. London. 1863, p. 281. — Ed. ** K Marx, Theonen iiber den Mehrwert. K. Marx/F. Engels, Werke, Band 26.