brick, delicately cast: and the most remarkable feature of the whole is the small piece of brick inlaid on the angle of each stone voussoir, with a most just feeling, which every artist will at once understand, that the color ought not to be let go all at once. § XVII. We have traced the various conditions of treatment in the archivolt alone; but, except in what has been said of the peculiar expression of the voussoirs, we might throughout have spoken in the same terms of the jamb. Even a parallel to the expression of the voussoir may be found in the Lombardic and Norman divisions of the shafts, by zigzags and other transverse ornamentation, which in the end are all swept away by the canaliculated mouldings. Then, in the recesses of these and of the archivolts alike, the niche and statue decoration develops itself; and the vaulted and cavernous apertures are covered with incrustations of fretwork, and with every various application of foliage to their fantastic mouldings. § XVIII. I have kept the inquiry into the proper ornament of the archivolt wholly free from all confusion with the questions of beauty in tracery; for, in fact, all tracery is a mere multiplication and entanglement of small archivolts, and its cusp ornament is a minor condition of that proper to the spandril. It does not reach its completely defined form until the jamb and archivolt have been divided into longitudinal mouldings; and then the tracery is formed by the innermost group of the shafts or fillets, bent into whatever forms or foliations the designer may choose; but this with a delicacy of adaptation which I rather choose to illustrate by particular examples, of which we shall meet with many in the course of our inquiry, than to delay the reader by specifying here. As for the conditions of beauty in the disposition of the tracery bars, I see no hope of dealing with the subject fairly but by devoting, if I can find time, a separate essay to it--which, in itself, need not be long, but would involve, before it could be completed, the examination of the whole mass of materials lately collected by the indefatigable industry of the English architects who have devoted their special attention to this subject, and which are of the highest value as illustrating the chronological succession or mechanical structure of tracery, but which, in most cases, touch on their æsthetic merits incidentally only. Of works of this kind, by far the best I have met with is Mr. Edmund Sharpe's, on Decorated Windows, which seems to me, as far as a cursory glance can enable me to judge, to exhaust the subject as respects English Gothic; and which may be recommended to the readers who are interested in the subject, as containing a clear and masterly enunciation of the general principles by which the design of tracery has been regulated, from its first development to its final degradation. FOOTNOTES: