Altar

Altar A structure on which a sacrifice was offered. The earliest altars were merely heaps of earth or turf or rough unhewn stone; but as the mode of sacrificing became more ceremonious grander altars were built. Some were of marble and brass, ornamented with carvings and bas-reliefs, and the corners with models of the heads of animals. They varied in height from two feet to twenty, and some were built solid; others were made hollow to retain the blood of the victims. Some were provided with a kind of dish, into which frankincense was thrown to overpower the smell of burning fat. This probably was the origin of the custom of burning incense at the altar.