This graceful story is the invention of a later century, but it is worth while to trace its origin. It was customary in the Middle Ages to consecrate the summits of hills and mountains to Michael, the archangel, from an association of ideas which needs no explanation. Similarly, in classical times, the Alpine passes had been placed under the protection of Jupiter the Thunderer, and lofty peaks crowned with his temples. Without citing the examples of Mont Saint Michel on the coast of Normandy, or of Monte Gargano on the coast of Apulia, we need only look around the neighborhood of Rome to find the figure of the angel wherever a solitary hill or a commanding ruin suggested the idea or the sensation of height. _Deus in altis habitat._ Here is the isolated cone of Castel Giubileo on the Via Salaria (a fortified outpost of Fidenæ); there the mountain of S. Angelo above Nomentum, and the convent of S. Michele on the peak of Corniculum. The highest point within the walls of Rome, now occupied by the Villa Aurelia (Heyland) was covered likewise by a church named S. Angelo in Janiculo. The two principal ruins in the valley of the Tiber--the Mausoleum of Augustus and that of Hadrian--were also shaded by the angel's wings. The shrine over the vault of the Julian emperors was called S. Angelo de Augusto, while that built by Boniface IV. (608-615) above Hadrian's tomb was called _inter nubes_ (among the clouds), or _inter cœlos_ (in the heavens). This shrine was replaced later by the figure of an angel. During the pestilence of 1348 the statue was reported by thirty witnesses to have bowed to the image of the Virgin which the panic-stricken people were carrying from the church of Ara Cœli to S. Peter's. In 1378 the ungrateful crowd destroyed it in their attempt to storm the castle. Nicholas V. (1447-1455) placed a new image on the top of the monument, which perished in the explosion of the powder-magazine in 1497. The shock was so violent that pieces of the statue were found beyond S. Maria Maggiore, a distance of a mile and a half. Alexander VI., Borgia, set up a statue for the third time, which was stolen by the hordes of Charles V. for the sake of its heavy gilding. The marble effigy by Raffaele di Montelupo was placed on the vacant base, and remained until Benedict XIV. (1740-1758) set up a fifth and last figure, which was cast in bronze by Wenschefeld. [Illustration: The Angel on the Mausoleum of Hadrian.]