The worship of stones is a kind of fetichism, which in the very infancy of religion prevailed, perhaps, more extensively than any other form of religious culture. Lord Kames explains the fact by supposing that stones erected as monuments of the dead became the place where posterity paid their veneration to the memory of the deceased, and that at length the people, losing sight of the emblematical signification, which was not readily understood, these monumental stones became objects of worship. Others have sought to find the origin of stone-worship in the stone that was set up and anointed by Jacob at Bethel, and the tradition of which had extended into the heathen nations and become corrupted. It is certain that the Phoenicians worshipped sacred stones under the name of _Baetylia_, which word is evidently derived from the Hebrew _Bethel_; and this undoubtedly gives some appearance of plausibility to the theory. But a third theory supposes that the worship of stones was derived from the unskilfulness of the primitive sculptors, who, unable to frame, by their meagre principles of plastic art, a true image of the God whom they adored, were content to substitute in its place a rude or scarcely polished stone. Hence the Greeks, according to Pausanias, originally used unhewn stones to represent their deities, thirty of which that historian says he saw in the city of Pharas. These stones were of a cubical form, and as the greater number of them were dedicated to the god Hermes, or Mercury, they received the generic name of _Hermaa_. Subsequently, with the improvement of the plastic art, the head was added.[227] One of these consecrated stones was placed before the door of almost every house in Athens. They were also placed in front of the temples, in the gymnasia or schools, in libraries, and at the corners of streets, and in the roads. When dedicated to the god Terminus they were used as landmarks, and placed as such upon the concurrent lines of neighboring possessions. The Thebans worshipped Bacchus under the form of a rude, square stone. Arnobius[228] says that Cybele was represented by a small stone of a black color. Eusebius cites Porphyry as saying that the ancients represented the deity by a black stone, because his nature is obscure and inscrutable. The reader will here be reminded of the black stone _Hadsjar el Aswad_, placed in the south-west corner of the Kaaba at Mecca, which was worshipped by the ancient Arabians, and is still treated with religious veneration by the modern Mohammedans. The Mussulman priests, however, say that it was originally white, and of such surprising splendor that it could be seen at the distance of four days' journey, but that it has been blackened by the tears of pilgrims. The Druids, it is well known, had no other images of their gods but cubical, or sometimes columnar, stones, of which Toland gives several instances.