tice the details themselves. Its form is simple to a degree; the roof generally quite flat, so as to leave the mass in the form of a parallelopiped, in general without wings or adjuncts of any sort. Villa Somma-Riva (Fig. 28 in p. 93), is a good example of this general form and proportion, though it has an arched passage on each side, which takes away from its massiness. This excessive weight of effect would be injurious, if the building were set by itself; but, as it always forms the apex of a series of complicated terraces, it both relieves them and gains great dignity by its own unbroken simplicity of size. This general effect of form is not injured, when, as is often the case, an open passage is left in the centre of the building, under tall and well-proportioned arches, supported by pilasters (never by columns). Villa Porro, Lago di Como (Fig. 31), is a good example of this method. The arches hardly ever exceed three in number, and these are all of the same size, so that the crowns of the arches continue the horizontal lines of the rest of the building. Were the centre one higher than the others, these lines would be interrupted, and a great deal of simplicity lost. The covered space under these arches is a delightful, shaded, and breezy retreat in the heat of the day; and the entrance doors usually open into it, so that a current of cool air is obtainable by throwing them open.
The building itself consists of three floors: we remember no instance of a greater number, and only one or two of fewer. It is, in general, crowned with a light balus-
