If the immigration of the Aryas into the land of the Ganges took place about 1500 B.C. we should have a point whereby to fix the time at which the hymns of the Veda were composed, for in them, as has been already remarked, the Ganges is rarely mentioned. The great number of the hymns must therefore have received the form in which they were retained and handed down by the families of minstrels before the year 1500 B.C. The period of migration brought with it more serious and earnest tasks than had occupied the Aryas in the Panjab. The struggles against the old population, the wars of the newly-established states with one another, claimed the whole power of the emigrants. Hence the duties of the sacrificial songs or of hymns of thanksgiving were thrown into the background by the imperative necessities of the moment. Men were contented with the invocations of the gods which lived in the memory of the minstrel-families, and had been brought from the ancient home. The minstrels also, who led the emigrant princes and tribes, naturally gave their attention to songs of war and victory--songs of which the fragment preserved from the wars of the Bharatas against the Tritsus is an example (p. 67). When at length the period of emigration, of settlement, and struggle was over, with the advent of more peaceful times, the excitement of the moment gave place to reflection and to the remembrance of the great deeds of the ancestors. The inspired flights, the pressure of immediate feeling which had prompted the songs before the battle and after the victory, were followed by a more peaceful and narrative tone. Hence grew up a series of songs of the marvels and deeds of the heroes who had conquered the land in the Yamuna and Ganges, and had founded states and cities there. As the heroes and events thus celebrated passed into the background, as the intervening periods became wider, the greater was the tendency of this mass of song to gather round a few great names and incidents. The less prominent forms and struggles disappeared, and in the centuries which followed the strain of settlement and establishment an artificial culture of this warlike minstrelsy united the whole recollections of the heroic times into the narrative of the great war, the Mahabharata.