Last summer he read before the Astronomical Society a paper entitled "The Mutability of Newtonian Law," and was laughed out of that honorable body for his inconsistencies. Although adverted to as "The Harlem Sage," Professor Quinn is no Merlin, nor does he possess the ring of Gyges that rendered its wearer invisible. Yet where is he? And where is his castle? Until some Vidocq appears and solves the mystery, echo can only answer "Where?" So much for the article in the first printing of the paper. The bright young man who stood sponsor for the "scoop" had meanwhile been very busy with fresh details, and the second edition contained the following addenda: It has just been learned that Mr. Emmet Gilhooly, the multimillionaire and president of the railroad combine, was a guest of Professor Quinn last night, and must have been in the castle at the very moment it faded into oblivion. Mr. Gilhooly did not return to his home and has not since been heard from. His relatives are distracted and leading railroad men of the country are in a panic. His absence from affairs at the present moment jeopardizes the traction interests of the entire country, and may prove a deathblow to the success of the gigantic pool he was forming. This was startling news indeed, and sped hither and yon throughout the city, the country, and the civilized world. Appalling as the information was, nevertheless it proved merely a fractional part of the truth. The bright reporter on the _Mercury_ made further discoveries, which were printed in the third edition rushed from the presses of his paper. Not only was Mr. Emmet Gilhooly a guest of Professor Quinn in the steel castle last night, but so also were Hon. Augustus Popham, the coal baron; J. Archibald Meigs, of Wall Street, late manipulator of the corner in wheat and now engineering a corner in cotton, and Hannibal Markham, well known as the instigator of a plot to control the food supply of the United States. What has become of these four millionaires and Napoleons of finance? They have gone with Quinn and his castle, disappearing as utterly as though the earth had opened and swallowed them. Fabulous rewards were offered by the relatives of the missing millionaires for any information relative to the fate that had overtaken them. Foul play was suspected, and the financial world stood aghast and dumbly wondered what was to happen to the business of the country if it really developed, beyond all peradventure, that Gilhooly, Popham, Meigs, and Markham had been eliminated from commercial affairs.