We have frequently had occasion to observe that travellers differ widely from each other, even as to such matters of fact as must have come under the cognisance of their senses. The late Mr Rae Wilson, for instance, who observed personally the falls of the Narova, gives the measurement of the descent of water at something so comparatively enormous, as to prove that he had unconsciously blended in his imagination the whole of the rapids into one cataract; and we ourselves, when gazing upon those troubled waters from the wooden bridge that spans them, looked with such surprise upon the 'Yarrow Visited,' as must, we fear, have coloured, in an opposite way from Mr Wilson's, our impressions, and consequently our report. If travellers who desire, both from interest and inclination, to be impartial differ so widely in matters of fact, what shall be said of matters of opinion? A compiler is frequently taunted with presuming to write critically of countries he has never visited in person; but if he will only take the pains to collect, and sift, and compare the jarring and often opposite accounts of residents and travellers, we have a strong suspicion that he will be found better qualified for his business than any of them! India has always been _the_ Debateable Land of authors, both as to fact and opinion. The books published upon that country contain the most outrageous mass of contradictions extant; and each successive writer gives the lie, without the smallest ceremony, to those who preceded him. This cannot be wholly owing to our ignorance of the country and the people. The Hon. Robert Lindsay was shut up with the natives almost exclusively for twelve years; and he represents them as being so honest, that he could intrust three or four thousand pounds' worth of his property to a menial servant, wandering to the farthest extremity of the country, and absent for twelve months at a time. Colonel Davidson resided for many years, and travelled much in India; and he turns the reverse of the medal, representing the native inhabitants as thieves and vagabonds to a man. We must go further, therefore, than the mere question of knowledge; for these two witnesses (whom we take as the types of two numerous classes) are men of both knowledge and honour. We must seek for an explanation of the mystery in the depths of the human character.