IN that material--stucco--which we of the nineteenth century affect to despise, and in the use of which both the Romans and the Great Masters of the Renaissance, under Raffaelle's guidance, excelled, the Moors delighted. By its use they were able, with speed and accuracy, to supply the redundancy of conventional ornament essential to contrast with the rigid geometrical setting out of lines and compartments which formed a fundamental law of their beautiful style of design. Their aptitude in the manipulation of this material did not desert them when their talents were called into operation by their Christian Masters. Of this the pretty window which forms the chief feature of the sketch under consideration, offers an agreeable proof. At the first glance, one might have fancied that this window was of earlier date than the gothic stone arch beneath, and indeed a relic of the Moorish occupation of Valladolid before the Christians reconquered the district, so different in style are its details from those of the arch. To have encountered the difficulties of constructing such an arch beneath, without destroying such a window, is, however, so contrary to all ancient precedents in similar cases, that any such theory must be dismissed on reflexion, and an explanation sought in some other direction. It is to be found in the fact, that about the middle of the fifteenth century, shortly after which date, both arch and window were probably constructed, the Christians had plenty of skilful artificers in stone, who possessed no aptitude for working in stucco, whilst the Moors executed but little ornament in stone, but much in brick and plaster. Hence the marked difference in style which is apparent between the window sketched, and the architectural detail of the rest of this pretty little court, which is shown on this sketch, and the one which follows it. The rooms surrounding the Arcade of this Patio, and the Arcade itself, are now used as a "Corps de Garde" in connection with the Government offices of the great Patio of this "Colegio." They naturally, therefore, rejoice in the rapidly accumulating whitewash, which serves very generally in Spain, at once as a panacea against cholera and fever, and the obliterator of all useless excrescences in the nature of Architectural Ornament. [Illustration: PLATE 6 VALLADOLID MDW 1869 PATIO COLEGIO DE SAN GREGORIO] PLATE VI. _VALLADOLID._ SMALL PATIO, COLEGIO DE SAN GREGORIO.