Of portions of Ireland, it was said, early in this century: “On the 11th of November, every family of a village kills an animal of some kind or other; those who are rich kill a cow or sheep, others a goose or a turkey; while those who are poor ... kill a hen or a cock, and sprinkle the threshold with the blood, and do the same in the four corners of the house; ... to exclude every kind of evil spirit from the dwelling.”[53] Holes bored in the door-sill, and plugged with pieces of paper on which are written incantations, a broom laid across the door-sill, or “three horseshoes nailed on the door-step with toes up,” are supposed to be a guard against witches or evil spirits in portions of Pennsylvania to-day.[54] Many a Pennsylvanian is unwilling to cross, for the first time, the threshold of a new home, without carrying salt and a Bible. Among the Indians in ancient Mexico there was an altar near the door of every house, with instruments of sacrifice, and accompanying idols.[55] “Threshold” and “foundation” are terms that are used interchangeably in primitive life. The sacredness of the threshold-stone of a building pivots on its position as a foundation stone, a beginning stone, a boundary stone. Hence the foundation stone of any house, or other structure was sacred as the threshold of that building. According to Dr. H.V. Hilprecht, in the earlier buildings of Babylonia the inscriptions and invocations and deposits were at the threshold, and later under the four corners of the building; but when they were at the threshold they were not under the corners, and _vice versa_. It would seem from this that the corner-stone was recognized as the beginning, or the limit, or the threshold, of the building. It may be, therefore, that the modern ceremonies at the laying of a “corner-stone” are a survival of the primitive sacredness of a threshold-laying.[56] It would seem, moreover, as if the sanctity of the threshold as the primitive altar were, in many places, in the course of time transferred to the family hearth. In the primitive tent the household fire was at the entrance way, as it is in the tents of the East to-day. Where Arabs have camped on an Eastern desert, the place of the shaykh’s tent can always be known by the blackened hearthstones at its entrance, or threshold, where he welcomed guests to the hospitality of his tribe and family by the sharing of bread and salt, or by the outpouring of the blood of a slaughtered lamb or kid.