He was afterward the head of the Coast Survey. He had little respect for pupils who had not a genius for mathematics, and paid little attention to them. He got out an edition of Peirce's Algebra while I was in college. He distributed the sheets among the students and would accept, instead of a successful recitation, the discovery of a misprint on its pages. The boys generally sadly neglected his department, which was made elective, I think, after the sophomore year. At the examinations, which were held by committees appointed by the Board of Overseers, he always gave to the pupil the same problem that had been given to him in the last preceding recitation. So the boys were prepared to make a decent appearance. He used to dress in a very peculiar fashion, wearing a queer little sack and striped trousers which made him look sometimes as if he were a salesman in a Jew clothing-store. He had a remarkably clear and piercing black eye. One night one of the students got into the belfry and attached a slender thread to the tongue of the bell, contrived to lock the door which led to the tower and carry off the key, then went to his room in the fourth story of Massachusetts Hall and began to toll the bell. The students and the Faculty and proctors gathered, but nobody could explain the mysterious ringing of the bell until Peirce came upon the scene. His sharp eye perceived the slender line and it was traced to the room where the roguish fellow who was doing the mischief thought himself secure. He was detected and punished. Peirce gained great fame in the scientific world by his controversy with Leverrier. Leverrier, as is well known, discovered some perturbations in the movement of the planet Herschel, now more commonly called Uranus, which were not accounted for by known conditions. From that he reasoned that there must be another planet in the neighborhood and, on turning his glass to the point where his calculations told him the disturbing body must be, he discovered the planet sometimes called by his name and sometimes called Neptune. This discovery created a great sensation and a burst of admiration for the fortunate discoverer. Peirce maintained the astounding proposition that there was an error in Leverrier's calculations, and that the discovery was a fortunate accident. I believe that astronomers finally came to his conclusion. I remember once going into Boston in the omnibus when Peirce got in with a letter in his hand that he had just got from abroad and saying with great exultation to Professor Felton, who happened to be there, "Gauss says I am right."