CLEVELAND, Ohio: A. D. 1901-1908. The Farm Colony Experiment. See (in this Volume) CRIME AND CRIMINOLOGY, PROBLEMS OF. COAL, Wasteful mining and use of. See (in this Volume) Conservation of Natural Resources. COAL AND COKE CARTELS. See (in this Volume) COMBINATIONS, INDUSTRIAL (IN GERMANY). COAL COMBINATION, Alleged Anthracite: Proceedings of Government against it. See (in this Volume) COMBINATIONS, INDUSTRIAL: UNITED STATES: A. D. 1907-1909, AND RAILWAYS: UNITED STATES: A. D. 1906-1909. COAL MINES EIGHT HOURS ACT. See (in this Volume) LABOR PROTECTION: HOURS OF LABOR: ENGLAND. COAL MINING STRIKES. See (in this Volume) LABOR ORGANIZATION. COBALT SILVER MINES. See (in this Volume) CANADA: A. D. 1903, and 1906-1907. COLLECTIVISM. See (in this Volume) SOCIALISM. COLLEGES. See (in this Volume) EDUCATION. COLOGNE: Insurance against unemployment. See (in this Volume) POVERTY, PROBLEMS OF: UNEMPLOYMENT. COLOMBIA: A. D. 1898-1902. Castro, of Venezuela, and the Liberals (Yellows) of Colombia. How they helped one another. The following passages are from an article in the _American Review of Reviews_ on "South American War Issues," by Edwin Emerson, Jr., who spent some time with the Colombian insurgents in 1902 and acquired a good knowledge of the troubled political conditions in that republic and its near neighbors. It adds something to what is told in Volume VI. of this work concerning the revolt started in 1899 by Rafael Uribe-Uribe, and about its relation to the beginnings of the career of Cipriano Castro, in Venezuela See, in Volume VI, COLOMBIA, and VENEZUELA).