and it has two transoms; the walls of this wing of the transept are very plain, flat at top, and no parapet. The whole north side of the nave can be seen only from the cloister-yard. The south walk of the cloister is gone, and in the wall of the aisle, below the windows, are still seen several enriched semicircular arches resting on short cylindrical columns, evidently belonging to the original church of Hugh Lupus. The windows of the aisle are Tudor arched, with the ordinary tracery of this period; but, owing to the cloister once existing beneath, are necessarily curtailed of half their due length: there is a thin, flat buttress between each; the aisle has no parapet. The clerestory is lofty, and the windows pointed, and not so much depressed as those in the aisle beneath: they are not so lofty as those in the south side, nor have they any canopies. There is a thin buttress between each, without pinnacles, and the parapet is quite plain, but not so shallow as that on the south side. The central tower is perhaps the best external feature of this Cathedral, it is indeed only of one story above the roof ridge, but it is loftier than such towers usually are; in each face of it are two pointed windows, divided down the middle with a single mullion, with a quatrefoil at the top, and all of them having flowing crocketted canopies with finials. At each of the four angles of the tower is an octagonal turret engaged, all of which, like the tower itself, are terminated with an embattled parapet. [Picture: The Cloisters, Chester Cathedral]