Its ornamentation is as peculiar as its form. It consists of a series of irregularly divergent spirals in _repoussé_ work repeated symmetrically but not identically on either side of the median line of the front of the object. These spirals or scroll-like figures are formed of curves which are long and flattened, passing suddenly into curves of quicker motion, and ending in volutes. These curves, though proceeding in the same direction, do not proceed at parallel or regular distances from each other, but converge and diverge so as to enclose between them alternate spaces of varying extent of surface. The spaces enclosed between the curves are raised, and the spaces enclosed by their convolutions are flat, but the raised spaces are modelled so as to express the confluence of solid curves of the peculiar forms already indicated. These trumpet and spiral scrolls, as they are called, enclosing irregularly formed curvilinear spaces, and producing designs which are similar but unsymmetrical, are repeated in different varieties of pattern on the outer sides of the horns (Fig. 93). In the terminal convolutions of the scrolls the curves are sometimes arranged so as to produce a zoomorphic effect, which differs from the later zoomorphism of the metal-work of the Christian time and of the later manuscripts, in being more geometrical in form and character. The zoomorphic termination of the horns has also more of a geometric character than is usual in the Christian period. [Illustration: Fig. 93.—Plan of the Horns and their Ornament. (1) The right horn. (2) Zoomorphic termination of the right horn seen frontwise. (3) The left horn.]