Yet, even without book, we may have been a little surprised both to find a Thirty-city so far in the heart of the Volscian and Hernican hills, and to find its warriors marshalled along with such distant comrades as Tibur and Pedum and "Gabii of the pool." And, when we come back to our books, a horrible thought presses itself upon us more and more, a thought that Ferentinum may have no right to any place in that list at all. The name seems to be Lord Macaulay's guess--among a hundred other guesses--at the manifestly corrupt name which comes next before Gabii in Dionysios' list of the Latin cities. Some read as near to our mark as _Fortinei_; so we may hope for the best; but remembering where Ferentinum stands, very far from Gabii, we confess that our hopes are small. In obedience to the Itinerary, it is from Anagni that we make our way to Ferentino. And as we go from Anagni to Ferentino, we better take in the special position of Anagni on the top of its isolated hill. Till we have gone some little distance, we are hardly conscious that Anagni is there at all; gradually the bell-tower rises into view, and the rest of the city follows. A few miles only lead us from the hill of Anagni to the hill of Ferentino. At the first glance it may be that the spot which we have reached does not specially strike as "Ferentinum of the rock." It does not seem to stand on such steep cliffs as many other hill-fortresses, Norba pre-eminently among them. But, when we begin to follow the line of the walls, we find out that, whether Lord Macaulay is right or wrong in speaking of Ferentinum at all, he has at least chosen his epithet wisely. Ferentinum is Ferentinum of the rock. Large parts of the wall stand directly on vast masses of rock, and sometimes rock and wall almost lose themselves in one another. And the walls of Ferentino certainly yield in interest to none of our series. They are still standing through the greater part of their ancient circuit, and for the most part they are of two manifest dates, differing in material and construction. There is an original lower part of the wall, built of huge blocks of lias which we may describe as rude, but less rude than the rudest work at Cori. The height to which this earliest construction of all reaches differs in different parts, but it has in most parts been patched and raised, not only by later repairs of all manner of dates, but long before then by a construction of very respectable antiquity, which would seem venerable if it were not for the elder and more massive stones beneath it. The later work has a general likeness to the walls of Anagnia both in construction and material, and it is distinguished from the more primitive work by the same mark. The pilers of the elder stones had no notion of the arch; the builders of the later wall were perfectly familiar with it. The only complete opening of the earlier work is a small postern with merely inclined sides; but in one of the ancient gates, not far from