There is a legend about the natural philosophy class-room, the period long antecedent to Tait. The professor, annoyed by a habit students had got into of leaving their hats on his desk, announced that the next hat placed there would be cut in pieces by him in presence of the class. The warning had its effect, until one day when the professor was called for a few minutes from the room. An undergraduate, to whom the natural sciences, unrelieved, were a monotonous study, slipped into the ante-room, from which he emerged with the professor's hat. This he placed on the desk, and then stole in a panic to his seat. An awe fell upon the class. The professor returned, but when he saw the hat he stopped. He showed no anger. "Gentlemen," he said, "I told you what would happen if you again disobeyed my orders." Quite blandly he took a pen-knife from his pocket, slit the hat into several pieces, and flung them into the sink. While the hat was under the knife, the students forgot to demonstrate; but as it splashed into the sink, they gave forth a true British cheer. The end. Close to the door of the natural philosophy room is a window that in my memory will ever be sacred to a janitor. The janitors of the university were of varied interest, from the merry one who treated us as if we were his equals, and the soldier who sometimes looked as if he would like to mow us down, to the Head Man of All, whose name I dare not write, though I can whisper it. The janitor at the window, however, sat there through the long evenings while the Debating Society (of which I was a member) looked after affairs of state in an adjoining room. We were the smallest society in the university and the longest-winded, and I was once nearly expelled for not paying my subscription. Our grand debate was, "Is the policy of the government worthy the confidence of this society?" and we also read about six essays yearly on "The Genius of Robert Burns"; but it was on private business that we came out strongest. The question that agitated us most was whether the meetings should be opened with prayer, and the men who thought they should would not so much as look at the men who thought they should not. When the janitor was told that we had begun our private business, he returned to his window and slept. His great day was when we could not form a quorum, which happened now and then.