This fanciful device occurs also among the Chinese, for a Jesuit, who accompanied the Emperor of China on a journey into Western Tartary in 1683, says, "This was the reason of his coming into their country with so great an army, and such vast military preparations; he having commanded several pieces of cannon to be brought, in order for them to be discharged from time to time in the valleys; purposely that the noise and fire, issuing from the mouths of the dragons, with which they were adorned, might spread terror around." Though dragons have completely dropped out of all modern works on natural history, they were still retained and regarded as quite orthodox until a little before the time of Cuvier; specimens, doubtless fabricated like the ingeniously constructed mermaid of Mr. Barnum, were exhibited in the museums; and voyagers occasionally brought back, as authentic stories of their existence, fables which had percolated through time and nations until they had found a home in people so remote from their starting point as to cause a complete obliteration of their passage and origin. For instance, Pigafetta, in a report of the kingdom of Congo,[213] "gathered out of the discourses of Mr. E. Lopes, a Portuguese," speaking of the province of Bemba, which he defines as "on the sea coast from the river Ambrize, until the river Coanza towards the south," says of serpents, "There are also certain other creatures which, being as big as rams, have wings like dragons, with long tails, and long chaps, and divers rows of teeth, and feed upon raw flesh. Their colour is blue and green, their skin painted like scales, and they have _two feet but no more_.[214] The Pagan negroes used to worship them as gods, and at this day you may see divers of them that are kept for a marvel. And because they are very rare, the chief lords there curiously preserve them, and suffer the people to worship them, which tendeth greatly to their profits by reason of the gifts and oblations which the people offer unto them." And John Barbot, Agent-General of the Royal Company of Africa, in his description of the coasts of South Guinea,[215] says: "Some blacks assuring me that they (_i.e._ snakes) were thirty feet long. They also told me there are winged serpents or dragons having a forked tail and a prodigious wide mouth, full of sharp teeth, extremely mischievous to mankind, and more particularly to small children. If we may credit this account of the blacks, they are of the same sort of winged serpents which some authors tell us are to be found in Abyssinia, being very great enemies to the elephants. Some such serpents have been seen about the river Senegal, and they are adorned and worshipped as snakes are at Wida or Fida, that is, in a most religious manner."