In order, however, to make still more sure that this difference in the height of the triangles should not escape the eye, another course of plain bricks is added above their points, increasing the width of the band by another two inches. There are five courses of bricks in the lower band, and it measures 1 ft. 6 in. in height: there are seven courses in the upper (of which six fall between the triangles), and it measures 1 ft. 10 in. in height, except at the extremity of the northern aisle, where for some mysterious reason the intermediate cornice is sloped upwards so as to reduce the upper triangles to the same height as those below. And here, finally, observe how determined the builder was that the one series should not be a mere imitation of the other; he could not now make them acute by additional height—so he here, and here only, narrowed their bases, and we have seven of them above, to six below.

      § XXVII. We come now to the most interesting portion of the whole east end, the archivolt at the end of the northern aisle.

      It was above stated, that the band of triangles was broken by two higher arches at the ends of the aisles. That, however, on the northern side of the apse does not entirely interrupt, but lifts it, and thus forms a beautiful and curious archivolt, drawn opposite, in Plate V. The upper band of triangles cannot rise together with the lower, as it would otherwise break the cornice prepared to receive the second story; and the curious zigzag with which its triangles die away against the sides of the arch, exactly as waves break upon the sand, is one of the most curious features in the structure.

      It will be also seen that there is a new feature in the treatment of the band itself when it turns the arch. Instead of leaving the bricks projecting between the sculptured or colored stones, reversed triangles of marble are used, inlaid to an equal depth with the others in the brickwork, but projecting beyond them so as to produce a sharp dark line of zigzag at their junctions. Three of these supplementary stones have unhappily fallen out, so that it is now impossible to determine the full harmony of color in which they were originally arranged. The central one, corresponding to the keystone in a common arch, is, however, most fortunately left, with two lateral ones on the right hand, and one on the left.

      § XXVIII. The keystone, if it may be so called, is of white marble, the lateral voussoirs of purple; and these are the only colored stones in the whole building which are sculptured; but they are sculptured in a way which, more satisfactorily proves that the principle above stated was understood by the builders, than if they had been left blank. The object, observe, was to make the archivolt as rich as possible; eight of the white sculptured marbles were used upon it in juxtaposition. Had the purple marbles been left altogether plain, they would have been out of harmony with the elaboration of the rest. It became necessary to touch them with sculpture as a mere sign of carefulness and finish, but at the same time destroying their colored surface as little as possible. The ornament is merely outlined upon them with a fine incision, as if it had been etched out on their surface preparatory to being carved. In two of them it is composed merely of three concentric lines, parallel with the sides of the triangle; in the third, it is a wreath of beautiful design, which I have drawn of larger size in fig. 2, Plate V., that the reader may see how completely the surface is left undestroyed by the delicate incisions of the chisel, and may compare the method of working with that employed on the white stones, two of which are given in that plate, figs. 4 and 5. The keystone, of which we have not yet spoken, is the only white stone worked with the light incision; its design not being capable of the kind of workmanship given to the floral ornaments, and requiring either to be carved in complete relief, or left as we see it. It is given at fig. 1 of Plate IV. The sun and moon on each side of the cross are, as we shall see in the fifth Chapter, constantly employed on the keystones of Byzantine arches.

      § XXIX. We must not pass without notice the grey and green pieces of marble inserted at the flanks of the arch. For, observe, there was a difficulty in getting the forms of the triangle into anything like reconciliation at this point, and a mediæval artist always delights in a difficulty: instead of concealing it, he boasts of it; and just as we saw above that he directed the eye to the difficulty of filling the expanded sides of the upper band by elongating his triangles, so here, having to put in a piece of stone of awkward shape, he makes that very stone the most conspicuous in the whole arch, on both sides, by using in one case a dark, cold grey; in the other a vigorous green, opposed to the warm red and purple and white of the stones above and beside it. The green and white piece on the right is of a marble, as far as I know, exceedingly rare. I at first thought the white fragments were inlaid, so sharply are they defined upon their ground. They are indeed inlaid, but I believe it is by nature; and that the stone is a calcareous breccia of great mineralogical interest. The white spots are of singular value in giving piquancy to the whole range of more delicate transitional hues above. The effect of the whole is, however, generally injured by the loss of the three large triangles above. I have no doubt they were purple, like those which remain, and that the whole arch was thus one zone of white, relieved on a purple ground, encircled by the scarlet cornices of brick, and the whole chord of color contrasted by the two precious fragments of grey and green at either side.

      § XXX. The two pieces of carved stone inserted at each side of the arch, as seen at the bottom of Plate V., are of different workmanship from the rest; they do not match each other, and form part of the evidence which proves that portions of the church had been brought from the mainland. One bears an inscription, which, as its antiquity is confirmed by the shapelessness of its letters, I was much gratified by not being able to read; but M. Lazari, the intelligent author of the latest and best Venetian guide, with better skill, has given as much of it as remains, thus:

      I have printed the letters as they are placed in the inscription, in order that the reader may form some idea of the difficulty of reading such legends when the letters, thus thrown into one heap, are themselves of strange forms, and half worn away; any gaps which at all occur between them coming in the wrong places. There is no doubt, however, as to the reading of this fragment:—“T … Sancte Marie Domini Genetricis et beati Estefani martiri ego indignus et peccator Domenicus T.” On these two initial and final T’s, expanding one into Templum, the other into Torcellanus, M. Lazari founds an ingenious conjecture that the inscription records the elevation of the church under a certain bishop Dominic of Torcello (named in the Altinat Chronicle), who flourished in the middle of the ninth century. If this were so, as the inscription occurs broken off on a fragment inserted scornfully in the present edifice, this edifice must be of the twelfth century, worked with fragments taken from the ruins of that built in the ninth. The two T’s are, however, hardly a foundation large enough to build the church upon, a hundred years before the date assigned to it both by history and tradition (see above, § VIII.): and the reader has yet to be made aware of the principal fact bearing on the question.

      § XXXI. Above the first story of the apse runs, as he knows already, a gallery under open arches, protected by a light balustrade. This balustrade is worked on the outside with mouldings, of which I shall only say at present that they are of exactly the same school as the greater part of the work of the existing church. But the great horizontal pieces of stone which form the top of this balustrade are fragments of an older building turned inside out. They are covered with sculptures on the back, only to be seen by mounting into the gallery. They have once had an arcade of low wide arches traced on their surface, the spandrils filled with leafage, and archivolts enriched with studded chainwork and with crosses in their centres. These pieces have been used as waste marble by the architect of the existing apse. The small arches of the present balustrade are cut mercilessly through the old work, and the profile of the balustrade is cut out of what was once the back of the stone; only some respect is shown for the crosses in the old design, the blocks are cut so that these shall be not only left uninjured,

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