O'HIGGINS, ō̇-ē′gē̇ns. An inland province of Chile, bounded by the Province of Colchagua on the south, Santiago on the north and west, and Argentina on the east (Map: Chile, C 10). Area, 2524 square miles. The eastern part lies on the slope of the Andes and is very mountainous. In the west the surface is flat and well adapted for grazing, which, together with agriculture, is the chief occupation. Gold and other metals are found in the mountains. Population, in 1895, 85,277. The capital is Rancagua (q.v.).