I sat some time in thought, then said: "I decline to concern myself in verifying the historical part of your narrative. The localities you mention may be true to name, and it is possible that you have related a personal history; but I can not perceive that I am interested in either proving or disproving it. I will say, however, that it does not seem probable that at any time a man can disappear from a community, as you claim to have done, and have been the means of creating a commotion in his neighborhood that affected political parties, or even led to an unusual local excitement, outside his immediate circle of acquaintances, for a man is not of sufficient importance unless he is very conspicuous. By your own admission, you were simply a studious mechanic, a credulous believer in alchemistic vagaries, and as I revolve the matter over, I am afraid that you are now trying to impose on my credulity. The story of a forcible abduction, in the manner you related, seems to me incredible, and not worthy of investigation, even had I the inclination to concern myself in your personal affairs. The statements, however, that you make regarding the nature of the crust of the earth, gravitation, light, instinct, and human senses are highly interesting, and even plausible as you artfully present the subjects, I candidly admit, and I shall take some pains to make inquiries concerning the recorded researches of experts who have investigated in that direction." "Collect your evidence," said he, "and I shall listen to your views when I return." He opened the door, glided away, and I was alone again. CHAPTER XXIII. I QUESTION SCIENTIFIC MEN.--ARISTOTLE'S ETHER. Days and weeks passed. When the opportunity presented, I consulted Dr. W. B. Chapman, the druggist and student of science, regarding the nature of light and earth, who in turn referred me to Prof. Daniel Vaughn. This learned man, in reply to my question concerning gravitation, declared that there was much that men wished to understand in regard to this mighty force, that might yet be explained, but which may never become known to mortal man.