VOLUME XXI, 1904. 746 pp. Price, cloth, $4.50.

1. [54] *Treaties, their Making and Enforcement.

By SAMUEL B. CRANDALL, Ph.D. Price, $1.50.

2. [55] The Sociology of a New York City Block.

By THOMAS JESSE JONES, Ph.D. Price, $1.00.

3. [56] Pre-Malthusian Doctrines of Population.

By CHARLES E. STANGELAND, Ph.D. Price, $2.50.