This distinction is, in architecture, still more necessary; for there are two marked styles dependent upon it: one in which the forms are drawn with light upon darkness, as in Greek sculpture and pillars; the other in which they are drawn with darkness upon light, as in early Gothic foliation. Now, it is not in the designer's power determinately to vary degrees and places of darkness, but it is altogether in his power to vary in determined directions his degrees of light. Hence, the use of the dark mass characterises, generally, a trenchant style of design, in which the darks and lights are both flat, and terminated by sharp edges; while the use of the light mass is in the same way associated with a softened and full manner of design, in which the darks are much warmed by reflected lights, and the lights are rounded and melt into them. The term applied by Milton to Doric bas-relief--"bossy," is, as is generally the case with Milton's epithets, the most comprehensive and expressive of this manner, which the English language contains; while the term which specifically describes the chief member of early Gothic decoration, feuille, foil or leaf, is equally significative of a flat space of shade. XV. We shall shortly consider the actual modes in which these two kinds of mass have been treated. And, first, of the light, or rounded, mass. The modes in which relief was secured for the more projecting forms of bas-relief, by the Greeks, have been too well described by Mr. Eastlake[I] to need recapitulation: the conclusion which forces itself upon us from the facts he has remarked, being one on which I shall have occasion farther to insist presently, that the Greek workman cared for shadow only as a dark field wherefrom his light figure or design might be intelligibly detached: his attention was concentrated on the one aim at readableness, and clearness of accent; and all composition, all harmony, nay, the very vitality and energy of separate groups were, when necessary, sacrificed to plain speaking. Nor was there any predilection for one kind of form rather than another. Bounded forms were, in the columns and principal decorative members, adopted, not for their own sake, but as characteristic of the things represented. They were beautifully rounded, because the Greek habitually did well what he had to do, not because he loved roundness more than squareness; severely rectilinear forms were associated with the curved ones in the cornice and triglyph, and the mass of the pillar was divided by a fluting, which, in distant effect, destroyed much of its breadth. What power of light these primal arrangements left, was diminished in successive refinements and additions of ornament; and continued to diminish through Roman work, until the confirmation of the circular arch as a decorative feature. Its lovely and simple line taught the eye to ask for a similar boundary of solid form; the dome followed, and necessarily the