Another is made of fine-grained sandstone, and shaped precisely similar to the sharpening-stones now used for scythes. Its dimensions are 5-1/2 inches long, 3/4 inch broad, and 1/2 inch deep (Fig. 163). _Funnel-shaped Holes._--Three flat portions of sandstone, each containing a small hole, opening up on both sides into funnel-like cavities. The stone here engraved is roughly circular, about 4 inches in diameter and 1 inch thick. The cavity at its mouth is about 1 inch in diameter, 1/2 an inch deep, and communicates with a similar one on the other side by a hole through which a small goose-quill can just pass. The holes in the other stones are precisely similar in shape, only the mouth of the funnel in one is one-third larger, and in the other about as much less; these differences being entirely dependent on the thickness of the stone (Fig. 164). [Illustration: Fig. 164.--Perforated Sandstone (1/2).] _Pebbles._--Of these there were several hundreds found, scattered all over the island, varying in size from half an inch to 6 or 7 inches in diameter, the larger of which might have been used as anvils, others as heating-stones, sling-stones, etc. _Querns._--Out of eleven quern-stones, almost all of which were made of granite, only two could be positively stated to be under ones. Three of the upper ones were round coarse lumps, about 1 foot in diameter and 10 inches deep, and of these two appear to have been unfinished. One had merely a cup-shaped cavity on its top, but no hole; and the other, in addition to the cup, had the central hole partially bored from both sides. Neither of them had any marginal hole. Four were circular, but rather flatter than usual, and measured a little over 1 foot in diameter. One was oval-shaped and particularly well finished, length 15 inches, breadth 13, and depth 5. The diameter of the funnel at its mouth was 5 inches, and the lower portion of it was lengthened in a line with the main axis of the quern--evidently caused by the friction of the pivot on which it turned round. The smaller end, containing the hole for a handle, was curved downwards, so that its tip was 1-3/4 inch lower than the under surface of the quern; another striking evidence of the long period the stone had been in actual use. [Illustration: Fig. 165.--Spindle Whorl (1/1).] [Illustration: Fig. 166.--Polished Disc (1/2).] _Spindle Whorl._--One spindle whorl (made of fine sandstone) is 1-3/4 inch in diameter and 5/8 inch thick (Fig. 165). _Polished Discs._[32]--Two of these interesting objects have turned up on this crannog. One, though wanting a small segment of being a complete circle, is evidently unbroken, as it presents in its whole perimeter a finely cut edge. It is composed of a whitish micaceous stone, quite smooth on both surfaces, but has no glossy appearance. It measures 4-1/2 inches in diameter, and has a uniform thickness of a quarter of an inch (Fig. 166).