But St. Michael on the slope of Tifata did carry us back in thought to a church of St. Peter seen some months before under a widely different state of outward things. We then made a somewhat difficult journey to a great and solitary Tuscan basilica in time of snow. The outward aspect of nature had certainly changed a good deal between the bleak day in January when it was found a hard task to follow the way from Pisa to the basilica of the prince of the Apostles _in Grado_ and the sunny day in May when the same travellers found their way without difficulties of any kind to the basilica of the prince of the archangels _in Formis_. And there certainly can be no likeness of position, even if both were seen in January or both in May, between the basilica standing low in the flats by the mouth of Arno and the basilica which nestles against the mountains which form a wall to the rich plain of Vulturnus. But in seeing any one of these great churches, left, not ruined, like our Cistercian abbeys, but still living on a kind of life in places forsaken or nearly so, something always brings up the memory of some other of its fellows. Aquileia is perhaps the greatest case of all; but Aquileia, with its special position in the history of the world, stands by itself. If Aquileia itself is dead, it has lived on a wonderful after-life in the shape of its Venetian colony. We go to see Aquileia, because it is Aquileia; but even a well-informed traveller may know nothing of _San Pietro in Grado_ and _Sant' Angelo in Formis_, till either his guide-book or some earlier visitor points them out to him as places which he ought not to pass by. Aquileia again has other things to show besides the great basilica and its surroundings. St. Apollinaris _in Classe_ is as nearly forsaken as a church that is still kept up can be; but the basilica of Classis does not stand by itself; it forms part of the wonders of Ravenna, as St. Paul without-the-Walls forms part of the wonders of Rome. St. Peter _in Grado_ might be looked on as standing in the same relation to Pisa; but it hardly enters into our general conception of Pisa, as the church of Classis--papal havoc hinders us from adding the church of Cæsarea--certainly enters into our general conception of Ravenna. S. Angelo _in Formis_ at all events does not enter into our general conception of old Capua, because there is not enough of old Capua left to form any general conception of it at all. The church and the small surrounding village do form a kind of distant _arx_ to the greater collection of houses which surrounds the amphitheatre; but among the nearer objects which catch the eye from the height, the most prominent is not old Capua with its amphitheatre, but new Capua, Casilinum that once was, with its towers and cupolas, mediæval and modern. We look on many things from the terrace in front of the portico of the archangel, but that which among artificial objects chiefly draws the eye towards it, is not the elder