rules we may compare some of the obligations laid on the Flamen Dialis. In the old days, as we saw, he was bound never to be absent from his house for a single night. He might not touch or even name raw meat, beans, ivy, and a she-goat; he might not eat leavened bread, nor touch a dead body; and the feet of his bed had always to be smeared with mud.[803] This last rule seems to be a mitigation of an older custom of sleeping on the ground, a custom which is still observed by the fire-priest in India, as it was in antiquity by the priests of Zeus at Dodona.[804] Similarly the priest of the old Prussian god Potrimpo was bound to sleep on the bare earth for three nights before he sacrificed to the deity.[805] [Sidenote: Mode in which the _Agnihotri_ procures fresh fire by the friction of fire-sticks.] Every Agnihotri has a separate room in his house where the sacred fire is kept burning in a small pit of a cubit square. Should the fire chance to go out, the priest must get fresh fire from another priest or procure it by the friction of fire-sticks (_arani_). These comprise, first, a block of _sami_ wood (_Prosopis spicigera_) in which a small hole is made emblematical of the female principle (_sakti yoni_), and, second, an upright shaft which is made to revolve in the hole of the block by means of a rope. The point in the drill where the rope is applied to cause it to revolve is called _deva yoni_. Two priests take part in the operation. Before they begin they sing a hymn in honour of the fire-god Agni. When the fire has been kindled they place it in a copper vessel and sprinkle it with powdered cow-dung. When it is well alight, they cover it with another copper vessel, sprinkle it with drops of water, and sing another hymn in honour of Agni. Finally, the new fire is consigned to the fire-pit.[806] According to another description of the modern Indian fire-drill, the lower block is usually made of the hard wood of the _khadira_ or _khair_ tree (_Acacia catechu_), and it contains two shallow holes. In one of these holes the revolving drill works and produces sparks by friction; the other hole contains tinder which is ignited by means of the sparks. This latter hole is known as the _yoni_, the female organ of generation. The upper or revolving portion of the drill is called the _pramantha_. It consists of a round shaft of hard wood, with a spike of softer wood inserted in its lower end. One priest causes the shaft to revolve by pulling a cord, while another priest presses the spike down into the hole in the block by leaning hard upon a flat board placed on the top of the shaft. The spike is generally made of the peepul or sacred fig-tree. When it has become charred by friction, it is replaced by another.[807] According to one account, the fire is made in this fashion, not by two priests, but by the Brahman and his wife; she pulls the cord, while he holds the borer in the hole and recites the spells necessary for the production of the fire.[808]