The Broch that has yielded the largest and most interesting collection of objects is that of Burrian in the island of North Ronaldsay, excavated by Dr. William Traill of Woodwick, the proprietor of the island. The structure was essentially similar to those that have been previously described. The wall of the tower was 15 feet thick at the base, enclosing an area of 30 feet in diameter. The greatest height of the wall remaining was 10 feet. The doorway was on the south-east side facing the sea. It was 3 feet 3 inches wide at the outer face of the wall, and had checks for a door consisting of two slabs projecting on either side of the passage so as to narrow the aperture to 2 feet 10 inches. Within the door-checks the passage widened to 4 feet 3 inches. There was but one chamber in the thickness of the wall on the north-east side of the tower. It measured 9 feet 9 inches by 5 feet 9 inches on the floor, and was about 5 feet high, the roof having fallen in. The entrance from the interior court to the chamber was 3 feet 3 inches high, and 2 feet 2 inches wide. [Illustration: Fig. 224.—Bone Implement from Broch of Burrian (5½ inches in length).] The objects found in the course of the excavations consisted of a large number of hammer-stones or oblong water-worn pebbles wasted at the ends by use, a number of querns and grain-rubbers, sinkstones, pieces of black vesicular lava, roughly pear-shaped, with holes bored through their smaller ends, and circular discs of thin slaty stone of various sizes. [Illustration: Fig. 225.—Bone Pins, with ornamental heads, from Broch of Burrian (actual size).] Among the objects made of bone, which were exceptionally numerous, were an implement of bone 5½ inches in length (Fig. 224), made from the radius or wing-bone of a bird by cutting it obliquely across at one end, and grinding the section smooth; ninety pins of bone varying in size from 4¾ inches to somewhat less than 1¼ inch in length, many of which have ornamental heads of the character shown in Fig. 225, while others of larger size are of the forms shown in Fig. 226, a large number are crutch-headed like Fig. 227, while one neatly-made pin with a rounded body (Fig. 228) is [Illustration: Fig. 226.—Bone Pins from Broch of Burrian (actual size).] cleverly ornamented by its head being carved in the similitude of two horses’ heads looking opposite ways, and another coarsely-made pin without a head (Fig. <span class='htmlonly'>229</span><span class='epubonly'>229</span>) is marked with transverse scorings. [Illustration: Fig. 227.—Crutch-headed Bone Pin from Broch of Burrian (actual size).] Besides the pins there are three needles of bone with elongated eyes, one broken, the others (Figs. 230, 231) 2¼ and 1¾ inches in length respectively. [Illustration: Figs. 228, 229.—Bone Pin with ornamental head, and pin with transverse markings, from Broch of Burrian (actual size).] There are also a number of pegs of bone, roughly finished, varying in length from 3 inches to 1½