_Vol. XXI, no. 1, may also be obtained bound._ Price, $2.00. 2. The Sociology of a New York City Block. By Thomas Jesse Jones, Ph. D. Price, $1.00. 3. Pre-Malthusian Theories of Population. By Charles E. Stangeland, Ph. D. Price, $2.50. VOLUME XXII. 1904. Price, $3.50; bound, $4.00. 1. The Historical Development of the Poor Law of Connecticut. By Edward W. Capen, Ph. D. The set of twenty-two volumes (except that Vol. II can be supplied only in unbound nos. 2 and 3) is offered for $68. Volumes I, III and IV can now be supplied only in connection with complete sets. For further information apply to Prof. EDWIN R. A. SELIGMAN, Columbia University or to THE MACMILLAN COMPANY, New York, London: P. S. KING & SON, Orchard House, Westminster