When light again appears in the middle of the 10th century the scene is wonderfully changed. Buddhism had practically disappeared in the north and west at least, though it still lingered on in Bengal, and Jainism had supplanted it in most places; but the mass of the people had become followers of Vishnu or Siva. New dynasties had arisen which, though they try to trace their lineage back to the troublous times when Ballabhi fell, were new to Indian history. Old India had passed away, and the history of modern India was about to open. The old dynasties had become extinct, and the Rajput races were gaily stepping forward to assume their places--too soon, alas! to be engaged in a life or death struggle with the most implacable foe to their race and religion that India has ever known. It was a cruel Nemesis that their victories over the Buddhists should soon have been followed by the fatal siege at Somnath in 1024, and the fight on the banks of the Ghaghar in 1193, which practically laid India at the feet of the Moslem invader, and changed the whole course of her subsequent career. But, as hinted above, with the appearance of the Moslem on the scene, our chronological difficulties cease, and the subject need not therefore be further pursued in this introduction. IMMIGRATIONS. From the above brief sketch of ancient Indian history it may be gathered that it is doubtful whether we shall ever be able to clothe with solid flesh the skeleton of history which is all we possess anterior to the advent of Buddha. It is also possible that pious frauds may have so confused the sequence of events between his death and the rise of the Mauryas, that there will be great difficulty in restoring that period to anything like completeness. But for the thousand years that elapsed between “the revenge of Chanakya” and the fall of Ballabhi the materials are ample, and when sufficient industry is applied to their elucidation there is little doubt that the whole may be made clear and intelligible. It does not fall within the scope of this work to attempt such a task; but it is necessary to endeavour to make its outlines clear, as, without this being done, what follows will be utterly unintelligible; while, at the same time, one of the principal objects of this work is to point out how the architecture, which is one important branch of the evidence, may be brought to bear on the subject. No direct evidence, however, derived only from events that occurred in India itself, would suffice to make the phenomena of her history clear, without taking into account the successive migrations of tribes and peoples who, in all ages, so far as we know, poured across the Indus from the westward to occupy her fertile plains.