The "difficulties which beset travellers and missionaries in their description of the religious and intellectual life of savages" have been catalogued by Mr. Max Muller. As he is not likely to have omitted anything which tells against the evidence of missionaries and travellers, we may adopt his statement in an abridged shape, with criticisms, and with additional illustrations of our own.* * Hibbert Lectures, p. 9 First, "Few men are quite proof against the fluctuations of public opinion". Thus, in Rousseau's time, many travellers saw savages with the eyes Rousseau--that is, as models of a simple "state of nature". In the same way, we may add, modern educated travellers are apt to see savages in the light cast on them by Mr. Tylor or Sir John Lubbock. Mr. Im Thurn, in Guiana, sees with Mr. Tylor's eyes; Messrs. Fison and Howitt, among the Kamilaroi in Australia, see with the eyes of Mr. Lewis Morgan, author of _Systems of Consanguinity_. Very well; we must allow for the bias in each case. But what are we to say when the travellers who lived long before Begnard report precisely the same facts of savage life as the witty Frenchman who wrote that "next to the ape, the Laplander is the animal nearest to man"? What are we to say when the mariner, or beach-comber, or Indian interpreter, who never heard of Rousseau, brings from Canada or the Marquesas Islands a report of ideas or customs which the trained anthropologist finds in New Guinea or the Admiralty Islands, and with which the Inca, Garcilasso de la Vega, was familiar in Peru? If the Wesleyan missionary in South Africa is in the same tale with the Jesuit in Paraguay or in China, while the Lutheran in Kamtschatka brings the same intelligence as that which they contribute, and all three are supported by the shipwrecked mariner in Tonga and by the squatter in Queensland, as well as by the evidence, from ancient times and lands, of Strabo, Diodorus and Pausanias, what then? Is it not clear that if pagan Greeks, Jesuits and Wesleyans, squatters and anthropologists, Indian interpreters and the fathers of the Christian Church, are all agreed in finding this idea or that practice in their own times and countries, their evidence is at least unaffected by "the fluctuations of public opinion"? This criterion of undesigned coincidence in evidence drawn from Protestants, Catholics, pagans, sceptics, from times classical, mediaeval and modern, from men learned and unlearned, is the touchstone of anthropology. It will be admitted that the consentient testimony of persons in every stage of belief and prejudice, of ignorance and learning, cannot agree, as it does agree, by virtue of some "fluctuation of public opinion". It is to be regretted that, in Mr. Max Muller's description of the difficulties which beset the study of savage religious ideas, he entirely omits to mention, on the other side, the corroboration which is derived from the undesigned coincidence of independent testimony.