216,851 persons; in telegraphy, 2,399; in photography.

INDEX OP AUTHORITIES 533 Ricardoschen Lehre von der Grundrente und Begriindung einer neucn Rententheorie , Berlin, 1851, S. 87. — Ed. ** D. Ricardo, Principles of Political Economy, Andover and New York, to make some rectifica¬ tions. Looking upon society and appropriates absolute rent, then this profit, so that the degree of exploitation of the circulation costs appears.