As we approached the mouth of the upper Cocytas, we met the Silver King and while the excursionists were exchanging greetings, a strange little craft with a dragon's head and propelled by oars, shot out from under the cover of the river bank. At the bow were our Norwegian sailors, Lief and Eric plying their oars most sturdily and singing a weird song, in which I distinguished the mythological names of Odin and Thor. The oarsmen were dressed in a strange, fantastic style, and were armed with spears, crossbows, swords, and long hunting knives. This strange craft came out of the river and both the Ice King and the Silver King, as if by common impulse stopped short in their career while the Viking, for such it was, took its place between them. To say that I was astonished at the appearance of a style of vessel that had been obsolete for centuries, but feebly expresses my surprise, and I asked Norrena where it came from. "It came from the outer world," he said, "about 2,000 years ago, and brought a warlike crew, the general appearance of which, the Superintendent of Festivities, has tried to imitate. The historians of that period could gather very little information from them concerning the country from which they came. They said that the people had to leave because it was so cold. This gave rise to the false impression that the outer world had become uninhabitable and that these were the last remnants of the people." "These people," I said, "were known as Northmen, and their ships were called Vikings. They were the most daring of navigators, and penetrated every portion of the outer world, and it is not at all surprising that some of them found their way to the inside. This will probably explain why so many of your names are identical with those of the Scandinavian countries. "That is correct," he said. "Many of our people are descended from this stock and still perpetuate the names. Our records preserve the language they brought with them as carefully as our chemists have preserved this little boat." "Do you intend to say," I asked, "that this is the original boat that found its way into the inner world a thousand years ago? I thought that it was a reproduction. How was it possible to preserve it so long?" "Yes," he said, "this is the original boat, and it has been preserved by forcing a chemical solution into the wood which makes it as durable as granite." As we were speaking, two powerful metallic arms operated by machinery reached down from the deck of the Silver King and lifted this little Viking and its passengers into stocks that had been prepared for it, with the seeming tenderness of a mother lifting her babe to her bosom. So suggestive was the manner in which it was done that I turned to Norrena to ask the meaning, which he anticipated by saying: