The outline is octagonal. Above the pendentives, forming the transition of the octagon, comes a double frieze of armorial bearings (those of Burgos and Charles V) and inscriptions, and a double clerestory, separated and supported by classical balustraded passages; the window splays and heads are a complete mass of carving and decorations. The vaulting itself contains within its bold ribs and segments an infinite variety of stars, as if one should see the panes of heaven covered with frosty patterns of a clear winter morning. Théophile Gautier's description of it is interesting as an expression of the effect it produced on a man of artistic emotions rather than trained architectural feeling: "En levant la tête," he says, "on aperçoit une espèce de dôme formé par l'intérieur de la tour,--c'est un groupe de sculpture, d'arabesques, de statues, de colonettes, de nervures, de lancettes, de pendentifs, a vous donner le vertige. On regarderait deux ans qu'on n'aurait pas tout vu. C'est touffu comme un chou, fenestré comme une truelle à poisson; c'est gigantesque comme une pyramide et délicat comme une boucle d'oreille de femme, et l'on ne peut comprendre qu'un semblable filigrane puisse se soutenir en l'air depuis des siècles." [Illustration: Photo by J. Lacoste, Madrid CATHEDRAL OF BURGOS Lantern over crossing] The work immediately around and underneath this gigantic effort is really the earliest part of the church, for, as was usual, the portion indispensable for services was begun first. The transepts, the abutting vaults, the southern and possibly the northern entrance fronts, undoubtedly all belong to the work carried so rapidly forward by Bishop Maurice's contagious enthusiasm. The work of the transepts is very similar to that in the nave, but, in the former, one obtains really a much finer view of the receding bays north and south than in the nave with its choir obstruction. The huge rose of the south transept, placed directly under the arch of the vaulting, is a splendid specimen of a Gothic wheel. Its tracery is composed of a series of colonettes radiating from centre to circumference, every two of which form, as it were, a separate window tracery of central mullion, two arches and upper rose. The other windows of the transepts are, barring their later alterations, typically thirteenth-century Gothic, high and narrow with colonettes in their jambs. While the glazing of the great southern rose is a perfect burst of glory, that of the northern transept arm is later and very mediocre.