Some of the foregoing facts strongly support an interpretation which Professor Oldenberg has given of the rules to be observed by a Brahman who would learn a particular hymn of the ancient Indian collection known as the Samaveda. The hymn, which bears the name of the Sakvari¯ song, was believed to embody the might of Indra's weapon, the thunderbolt; and hence, on account of the dreadful and dangerous potency with which it was thus charged, the bold student who essayed to master it had to be isolated from his fellow-men, and to retire from the village into the forest. Here for a space of time, which might vary, according to different doctors of the law, from one to twelve years, he had to observe certain rules of life, among which were the following. Thrice a day he had to touch water; he must wear black garments and eat black food; when it rained, he might not seek the shelter of a roof, but had to sit in the rain and say, "Water is the Sakvari¯ song"; when the lightning flashed, he said, "That is like the Sakvari¯ song"; when the thunder pealed, he said, "The Great One is making a great noise." He might never cross a running stream without touching water; he might never set foot on a ship unless his life were in danger, and even then he must be sure to touch water when he went on board; "for in water," so ran the saying, "lies the virtue of the Sakvari¯ song." When at last he was allowed to learn the song itself, he had to dip his hands in a vessel of water in which plants of all sorts had been placed. If a man walked in the way of all these precepts, the rain-god Parjanya, it was said, would send rain at the wish of that man. It is clear, as Professor Oldenberg well points out, that "all these rules are intended to bring the Brahman into union with water, to make him, as it were, an ally of the water powers, and to guard him against their hostility. The black garments and the black food have the same significance; no one will doubt that they refer to the rain-clouds when he remembers that a black victim is sacrificed to procure rain; 'it is black, for such is the nature of rain.' In respect of another rain-charm it is said plainly, 'He puts on a black garment edged with black, for such is the nature of rain.' We may therefore assume that here in the circle of ideas and ordinances of the Vedic schools there have been preserved magical practices of the most remote antiquity, which were intended to prepare the rain-maker for his office and dedicate him to it."