The third of these brooches consists of a penannular ring, formed of a solid cylindrical rod of silver ¼ inch thick, and 6½ inches diameter. It wants the pin, but the head, which is still on the ring, is furnished with a tapering projection, which fitted into a socket in the upper end of the pin. The bulbous extremities are not ornamented on one hemisphere with the prickly ornament, but have the one hemisphere plain and the other decorated with patterns of zoomorphic character (Figs. 75 and 76), while the bulbous head of the pin, which still remains on the ring of the brooch, has the remarkable anthropomorphic ornamentation shown in Fig. 77, and on the circular top of the pin-head is seen the interlaced ornament shown in Fig. 69. [Illustration: Fig. 61.—Silver Brooch found at Skaill (5 inches diameter). ] Another brooch with bulbous extremities, which also wants the pin, has its bulbs plain. Along with these bulbous ring-brooches there are other three examples of the same type which present variations in the form of the extremities of the pin and the penannular ring. The largest of these (Fig. 61) consists of a solid cylindrical rod of silver, ¼ inch in thickness, bent into an incomplete circle 5 inches in diameter. The pin, which wants the point, has a bulbous head of the same character as those previously described, but the prickly ornamentation is merely indicated by incised lines crossing each other diagonally. The other hemisphere of the bulbous head of the pin is decorated with a circle enclosing an equal-armed rectangular cross. The top of the pin presents a similar ornament, which might be described as a St. Andrew’s Cross; but there is nothing in the character of either of these figures which might not be present in a purely geometric ornament, and they need not therefore be supposed to possess a symbolic significance. The ends of the penannular ring of the brooch, instead of being furnished with bulbs, are slightly flattened and expanded, and their ornamentation consists of a simple dotted margin, with a triplet of larger dots placed in triangular form at the extremities of the expansions of the ring. Other two brooches of this form are smaller, and their pins have no bulbous heads, but are simply looped on to the ring of the brooch. The smaller of the two is perfectly plain; the larger has the expanded ends of the ring ornamented with zoomorphic interlaced work, slightly engraved in the silver with a very fine point. It is thus evident that the special peculiarity of these brooches is their excessive size, their massiveness and solidity of construction, the bulbous form of their terminal expansions, and their prickly and engraved ornamentation.