(2) Galpin, C. J. _The Social Anatomy of an Agricultural Community._ Madison, Wis., 1915. (Agricultural experiment station of the University of Wisconsin. Research Bulletin 34.) [See also _Rural Life_, New York, 1918.] (3) Aronovici, Carol. _The Social Survey._ Philadelphia, 1916. (4) McKenzie, R. D. _The Neighborhood._ A study of local life in Columbus, Ohio. Chicago, 1921 [in press]. (5) Park, Robert E. "The City. Suggestions for the Investigation of Human Behavior in the City Environment," _American Journal of Sociology_, XX (1914-15), 577-612. (6) Sims, Newell L. _The Rural Community, Ancient and Modern._ New York, 1920. B. _Studies of Individual Communities:_ (1) Maine, Sir Henry. _Village-Communities in the East and West._ London, 1871. (2) Baden-Powell, H. _The Indian Village Community._ Examined with reference to the physical, ethnographic, and historical conditions of the provinces. London, 1896. (3) Seebohm, Frederic. _The English Village Community._ Examined in its relations to the manorial and tribal systems and to the common or open field system of husbandry. An essay in economic history. London, 1883. (4) McGee, W. J. "The Seri Indians," _Bureau of American Ethnology 17th Annual Report 1895-96._ Washington, 1898. (5) Rivers, W. H. R. _The Todas._ London and New York, 1906. (6) Jenks, Albert. _The Bontoc Igorot._ Manila, 1905. (7) Stow, John. _A Survey of London._ Reprinted from the text of 1603 with introduction and notes by C. L. Kingsford. Oxford, 1908. (8) Booth, Charles. _Life and Labour of the People in London_, 9 vols. London and New York, 1892-97. 8 additional volumes, 1902. (9) Kellogg, P. U., ed. _The Pittsburgh Survey._ Findings in 6 vols. Russell Sage Foundation, New York, 1909-14. (10) Woods, Robert. _The City Wilderness._ A settlement study, south end of Boston. Boston, 1898. ----. _Americans in Process._ A settlement study, north and west ends of Boston. Boston, 1902. (11) Kenngott, G. F. _The Record of a City._ A social survey of Lowell, Massachusetts. New York, 1912. (12) Harrison, Shelby M., ed. _The Springfield Survey._ A study of social conditions in an American city. Findings in 3 vols. Russell Sage Foundation. New York, 1918. (13) Roberts, Peter. _Anthracite Coal Communities._ A study of the demography, the social, educational, and moral life of the anthracite regions. New York and London, 1904. (14) Williams, J. M. _An American Town._ A sociological study. New York, 1906. (15) Wilson, Warren H. _Quaker Hill._ A sociological study. New York, 1907. (16) Taylor, Graham R. _Satellite Cities._ A study of industrial suburbs. New York and London, 1915. (17) Lewis, Sinclair. _Main Street._ New York, 1920. (18) Kobrin, Leon. _A Lithuanian Village._ Translated from the Yiddish by Isaac Goldberg. New York, 1920. IV. THE STUDY OF THE FAMILY A. _The Primitive Family_ 1. The Natural History of Marriage: