Gregory and Ora had amused themselves reconstructing that old time when the metal island was as lively as today, and considerably more picturesque--owing to the alternative of skins for muck-spattered overalls; an underground chapter of the Niebelungenlied, its gnomes toiling down in those two miles of workings, stoping out less in a hundred years than the methods of today force a mine to yield in one. How they must have swarmed to the surface, regardless of discipline, at the first signal of the approaching ships, their one link with a world that was not all water and forest and underground cavern. By what tortuous way did those archaic ships travel from the Atlantic to the northwest corner of that vast inland sheet; unless, indeed, which is likely, subsequent upheavals have destroyed a waterway which may have connected sea and lake prior to 10000 B.C.[B] How many of those old ships lie in the bed of Lake Superior, laden with rude nuggets of copper, pounded from the gangue, or, who knows? smelted by a lost art into sheets and blocks? Archaic ships rode high, and no doubt those from Atlantis were overladen; for what has kept Atlantis in the realm of myth so long save the unscientific legend that she perished of greed and its vicious offspring? What archaic mysteries may not the terrible storms of that great north lake yet uncover? What strange variety of copper, washed and bitten by the waters of twelve thousand years, for which the enraptured geologist must find a new name? Who knows?--the bed of Lake Superior may be one unbroken floor of malachite; and the North American Indian of that region the descendant of those ancient miners, abandoned and forgotten when Atlantis plunged to the bottom of the sea. It was Ora who advanced these last frivolous theories, and--the clock striking eleven--Gregory sprang to his feet. “Likely as any,” he said. “All theories change about as often as it is time to get out a new edition of an encyclopædia, or develop a ‘new school’ which makes its reputation by the short cut of upsetting the solemn conclusions of its predecessors. I’m going down into the mine.” He bolted out with no further ceremony, but Ora was long since accustomed to the manners of Western men. She went to bed feeling that sadness had gone out of the world.