“ This passage, frequently termed a temple, contained a statue of the god, and had two entrances, which were always kept open in time of war and closed in time of peace. They were closed only once during the republic, at the end of the first Punic war, and twice by Augustus. Janus was sometimes represented with two, and sometimes with four faces, and was accordingly styled Bifrons and Quadrifrons. In works of art he frequently has a staff or sceptre in his right hand and a key in his left. ”