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begrimed and hairy--like a very Vulcan. Seizing an iron poker, Vulcan probed the orifice of the furnace, and forthwith there ran out a stream of liquid fire, which was caught in an iron bowl nearly four feet in diameter. The intense heat of this pool caused the visitors to step back a few paces, and the ruddy glow shone with a fierce glare on the swart, frowning countenance of Vulcan, who appeared to take a stern delight in braving it. Oliver's attention was at once attracted to this man, for he felt convinced that he had seen his face before, but it was not until he had taxed his memory for several minutes that the scene of his adventure with the smugglers near the Land's End flashed upon him, when he at once recognised him as the man named Joe Tonkin, who had threatened his life in the cavern. From a peculiar look that the man gave him, he saw that he also was recognised. Oliver took no further notice of him at the time, however, but turned to watch the flow of the molten tin. When the iron cauldron was almost full, "slag," or molten refuse began to flow and cover the top of the metal. The hole was immediately plugged up by Vulcan, and the furnace cleared out for the reception of another supply of ore. The surface of the tin was now cleared of slag, after which it was ladled into moulds and allowed to cool. This was the first process completed; but the tin was still full of impurities, and had to undergo another melting and stirring in a huge cauldron. This latter was a severe and protracted operation, which Vulcan performed with tremendous power and energy. In reference to this, it may interest the reader to mention a valuable discovery which was the result of laziness! A man who was employed in a tin-smelting establishment at this laborious work of stirring the molten metal in order to purify it, accidentally discovered that a piece of green wood dropped into it had the effect of causing it to bubble as if it were boiling. To ease himself of some of his toil, he availed himself of the discovery, and, by stirring the metal with a piece of green wood, caused such a commotion that the end in view was accomplished much more effectually and speedily than by the old process. The lazy man's plan, we need scarcely add, is now universally adopted. The last operation was to run the metal into moulds with the smelter's name on them, and these ingots, being of portable size, were ready for sale. While t
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