Three, four, five, six days passed. Then a week, then two weeks, and there was nothing to give a clue to the missing three. The most minute search had been made in every quarter. Nothing! In the park, even under the trees and brushwood. Nothing! Always nothing! Although here it was noticed that the grass looked to be pressed down in a way that seemed suspicious and certainly was inexplicable; and at the edge of the clearing there were traces of a recent struggle. Perhaps a band of scoundrels had attacked the colleagues here in the deserted park in the middle of the night! It was possible. The police proceeded with their inquiries in all due form and with all lawful slowness. They dragged the Schuyllkill river, and cut into the thick bushes that fringe its banks; and if this was useless it was not quite a waste, for the Schuyllkill is in great want of a good weeding, and it got it on this occasion. Practical people are the authorities of Philadelphia! Then the newspapers were tried. Advertisements and notices and articles were sent to all the journals in the Union without distinction of color. The “Daily Negro.” the special organ of the black race, published a portrait of Frycollin after his latest photograph. Rewards were offered to whoever would give news of the three absentees, and even to those who would find some clue to put the police on the track. “Five thousand dollars! Five thousand dollars to any citizen who would—” Nothing was done. The five thousand dollars remained with the treasurer of the Weldon Institute. Undiscoverable! Undiscoverable! Undiscoverable! Uncle Prudent and Phil Evans, of Philadelphia! It need hardly be said that the club was put to serious inconvenience by this disappearance of its president and secretary. And at first the assembly voted urgency to a measure which suspended the work on the “Go-Ahead.” How, in the absence of the principal promoters of the affair, of those who had devoted to the enterprise a certain part of their fortune in time and money—how could they finish the work when these were not present? It were better, then, to wait. And just then came the first news of the strange phenomenon which had exercised people’s minds some weeks before. The mysterious object had been again seen at different times in the higher regions of the atmosphere. But nobody dreamt of establishing a connection between this singular reappearance and the no less singular disappearance of the members of the Weldon Institute. In fact, it would have required a very strong dose of imagination to connect one of these facts with the other.