Giving due weight to every doubt, there remains this feature: the prophet unquestionably was influenced and actuated by the ideas of his day and generation, which looked upon the humiliations to which he subjected himself as the outward manifestations of an inward spirituality. Psychologically speaking, there is no great difference between the consumption of human excrement and the act of lying on one’s side for three hundred and ninety days; both are indications of the same perverted cerebration, mistaken with such frequency for piety and holiness. “Isaiah had periods of indecent maniacal outbursts; for we are told that he once went about stark naked for three years, because so commanded by the Lord.”—(“Rivers of Life,” vol. ii. p. 537, quoting Isaiah xx. 2, 3.) THE SACRED COW’S EXCRETA A SUBSTITUTE FOR HUMAN SACRIFICE. The foregoing testimony, which could readily be swelled in volume, proves the sacred character of these excreta, which may be looked upon as substitutes for a more perfect sacrifice. In the early life of the Hindus it is more than likely that the cow or the heifer was slaughtered by the knife or burnt; as population increased in density, domestic cattle became too costly to be offered as a frequent oblation, and on the principle that the part represents the whole, hair, milk, butter, urine, and ordure superseded the slain carcass, while the incinerated excrement was made to do duty as a burnt sacrifice.[38] It was hardly probable that such practices, or an explanation of the causes which led to their adoption and perpetuation, should have escaped the keen criticism of E. B. Tylor. “For the means of some of his multifarious lustrations, the Hindu has recourse to the sacred cow.... The Parsi religion prescribes a system of lustration which well shows its common origin with that of Hinduism by its similar use of cow’s urine and water.... Applications of _nirang_, washed off with water, form part of the daily religious rites, as well as of such special ceremonies as the naming of the new-born child, the putting on of the sacred cord, the purification of the mother after childbirth, and the purification of him who has touched a corpse.”—(E. B. Tylor, “Primitive Culture,” London, 1871, vol. ii. pp. 396, 397.)