I also very often find small objects in the form of a cone or with points more obtuse, and in this case perforated; they are turned from a mineral, which, according to Professor Landerer, is the Siphnian stone (_lapis ollaris_), commonly called potstone. The same scholar calls my attention to a passage of Pliny, who says: "On the island of Siphnos there is a stone which is hollowed out and turned for vases; these latter are very useful for cooking victuals or for the preservation of eatables, which, as we know, is the case with the _Comnes stone_ in Italy. The Siphnian stone has the peculiarity that, being heated, it becomes black by the contact of oil and much harder, it being naturally soft. It can be turned and used for ornaments." The small cones of this stone have in the lower border two small holes on either side, which must have been made for the pins by which the object was fastened. A likeness of such a cone is No. 172; of another object of the same material, No. 169. The curious object, No. 171, which has almost the form of a Trojan idol, is of decomposed glass, but its use is inexplicable to me; it has on its lower side a tubular hole for fastening it to something else, and may have served as an ornament. The little ball, No. 170, on which we see curious incised drawings, is of very hard baked clay. I also find very frequently button-like objects, like those already shown under No. 126,[214] which, according to Professor Landerer, have been turned out of a stone called "lapis serpentinus." I cannot explain the use of them otherwise than that they have served as ornaments in the doors and on the walls, like No. 167. There was also found a large perforated bead of white glass, and further a large block of diorite, with circular moulds for casting various objects. [Illustration: Nos. 170, 171, 172. Ornaments of Glazed Clay, &c. (3-4 M.) Actual size.] [Illustration: No. 173. A double-edged Hatchet of Bronze. (3 M.) Half-size.] A treasure of bronze objects was found at a depth of 13 feet. It consists of five knives (like Nos. 121-125),[215] two small wheels and an inexplicable object with a ring,[216] two lances, two double-edged hatchets (No. 173), hair-pins, two vases, and remnants of four others, and a tripod. It is incomprehensible to me for what purpose the wheels may have served; they can never have been intended for rotation, for, as may be seen by the engraving,[217] there is attached to them a quadrangular handle, which proves that they can never have been turned round. From one of the wheels[218] this handle is broken off; as for the rest, the wheels perfectly resemble those represented on the chariots in the sculptures, for there are four spokes, which form a cross round the axle. Also two very small and exceedingly curious wheels of lead were found, the one at the depth of 11 ft. 8 in., the other at 16½ ft.[219] [Illustration: Nos. 174-181. Lentoid Gems. (4-7 M.) Actual size.] [Sidenote: LENTOID GEMS.]