A slight, gray-haired man of fifty or there-abouts had entered the hall from the rear and immediately came forward to meet us. His eyes were the extraordinary feature of his face, piercingly brilliant and enormously magnified by the spectacles that he wore. The lenses of the latter were nearly an eighth of an inch thick and evidently of the highest power. Even with their aid his powers of vision seemed imperfect. On hearing the few words of explanation vouchsafed by the unamiable Mr. Hoyt, he drew from his pocket a second and third pair of glasses and deliberately added both to his original optical equipment. I know that I felt like a fly under a microscope in facing that formidable battery of lenses. But the scrutiny seemed to satisfy him; he spoke courteously enough: "Step into my office, gentlemen, and we will talk the matter over." Mr. Colman Hoyt had departed without further formality, and we followed our host into the room adjoining the hall on the right. It looked like the study of a man of science; charts and globes and plaster-of-Paris casts were everywhere, while the far end of the apartment was occupied by a huge, flat-topped table covered with papers, test-tubes, and glass-slides. But even more remarkable than its contents was the room itself, and its singular architectural proportions at once engaged my attention. As I have said, the house occupied two twenty-five-foot city lots, but the entrance and hall were at the extreme right as one looks outward towards the street, instead of being in the centre, as is usually the case. Consequently, the room in which we stood (being undivided by any interior partitions) extended the full width of the house, less that of the entrance hall--forty feet, let us say, in round numbers. But its measurements in the other direction were barely ten feet, the apartment presenting the appearance of a long, low, and narrow gallery. At the back were a row of five windows taking light from the interior court-yard; in brief, the house, imposing in its dimensions from the street side, was little more than a mask of masonry extremely ill-adapted for human habitation, or, indeed, for any purpose. Stepping to one of the rear windows, I looked out, and then the reason for this extraordinary construction--or, rather, reconstruction--became apparent. The lot was of the usual depth of one hundred feet, and, being a double one, it had a width of fifty. A large building of gray stone occupied the farther end of this inside space, the erection measuring about sixty feet in depth and extending the full width of the enclosure. That left a little less than thirty feet of court-yard between this back building and the one facing on the street, and it was evident that the rear of the original house had been sheared off bodily to provide for this singular readjustment in the owner's modus vivendi, only the party walls on either side being left standing. And these had