Silius is a town and commune in the province of Cagliari, Sardinia, Italy. Cagliari ( Provincia di Cagliari; Sardinian: Provìntzia de Casteddu) is a province in the autonomous island region of Sardinia in Sardinia (sɑrˈdɪnɪə Sardegna Sardigna or Sardinnya is the second-largest island in the Mediterranean Sea (after Sicily) Italy (Italia officially the Italian Republic, (Repubblica Italiana is located on the Italian Peninsula in Southern Europe, and on the two largest As of 2001, it has a population of 1,384. Year 2001 ( MMI) was a Common year starting on Monday according to the Gregorian calendar. In Biology a population is the collection of inter-breeding organisms of a particular Species; in Sociology