2. SOCIAL CONSTITUTION OF INDIA.--Hindu literature takes its character both from the social and the religious institutions of the country. The social constitution is based on the distinction of classes into which the people, from the earliest times, have been divided, and which were the natural effect of the long struggle between the aboriginal tribes and the new race which had invaded India. These castes are four: 1st. The Brahmins or priests; 2d. The warriors and princes; 3d. The husbandmen; 4th. The laborers. There are, besides, several impure classes, the result of an intermingling of the different castes. Of these lower classes some are considered utterly abominable--as that of the Pariahs. The different castes are kept distinct from each other by the most rigorous laws; though in modern times the system has been somewhat modified. THE RELIGION. In the period of the Vedas the religion of the Hindus was founded on the simple worship of Nature. But the Pantheism of this age was gradually superseded by the worship of the one Brahm, from which, according to this belief, the soul emanated, and to which it seeks to return. Brahm is an impersonality, the sum of all nature, the germ of all that is. Existence has no purpose, the world is wholly evil, and all good persons should desire to be taken out of it and to return to Brahm. This end is to be attained only by transmigration of the soul through all previous stages of life, migrating into the body of a higher or lower being according to the sins or merits of its former existence, either to finish or begin anew its purification. This religion of the Hindus led to the growth of a philosophy the precursor of that of Greece, whose aims were loftier and whose methods more ingenious. From Brahm, the impersonal soul of the universe, emanated the personal and active Brahma, who with Siva and Vishnu constitute the Trimurti or god under three forms. Siva is the second of the Hindu deities, and represents the primitive animating and destroying forces of nature. His symbols relate to these powers, and are worshiped more especially by the Sivaites--a numerous sect of this religion. The worshipers of Vishnu, called the Preserver, the first-born of Brahma, constitute the most extensive sect of India, and their ideas relating to this form of the Divinity are represented by tradition and poetry, and are particularly developed in the great monuments of Sanskrit literature. The myths connected with Vishnu refer especially to his incarnations or corporeal apparitions both in men and animals, which he submits to in order to conquer the spirit of evil.