34. Next to protection from external hostility, the two necessities in a city are of food and water supply;—the latter essentially constant. You can store food and forage, but water must flow freely. Hence the Fountain and the Mercato become the centres of civil architecture.
Premising thus much, I will ask you to look once more at this cloister of the Campo Santo of Pisa.
35. On first entering the place, its quiet, its solemnity, the perspective of its aisles, and the conspicuous grace and precision of its traceries, combine to give j^ou the sensation of having entered a true Gothic cloister. And if you walk round it hastily, and, glancing only at a fresco or two, and the confused tombs erected against them, return to the uncloistered sunlight of the piazza, you may quite easily carry away with you, and ever afterwards retain, the notion that the Campo Santo of Pisa is the same kind of thing as the cloister of Westminster Abbey.
36. I will beg you.to look at the building, thus photographed, more attentively The "long-drawn aisle" is here, indeed,—but where is the "fretted vault"?
