Ancient Roman architecture varying purposes and differed in design and construction. Along with theatres and amphitheatres, Circuses were one of the main entertainment sites of the time. Circuses were venues for chariot races, horse races, and performances that commemorated important events of the empire were performed there. For events that involved re-enactments of naval battles, the circus was flooded with water. The performance space of the Roman circus was normally, despite its name, an oblong rectangle of two linear sections of race track, separated by a median strip running along the length of about two thirds the track, joined at one end with
Roman Gradual to fit the revised Roman Missal and calendar. Some chants were replaced by ancient ones rediscovered after 1908. Roman Gradual The Roman Gradual (Latin: Graduale Romanum) is an official liturgical book of the Roman Rite of the Roman Catholic Church containing chants, including the Gradual proper and many more, for use in Mass. The latest edition of 1974 takes account of the 1970 revision of the "Roman Missal". In 1979, the "Graduale Triplex: The Roman Gradual With the Addition of Neums from Ancient Manuscripts" ( in English (1985), in Latin) was published. It added reproductions of the neumes from ancient