One year, however, a boy of sixteen or so, with a squeaky voice and a stammer, was Calderwood's severest critic. He sat on the back bench, and what he wanted to know was something about the infinite. Every discussion day he took advantage of a lull in the debate to squeak out, "With regard to the infinite," and then could never get any further. No one ever discovered what he wanted enlightenment on about the infinite. He grew despondent as the session wore on, but courageously stuck to his point. Probably he is a soured man now. For purposes of exposition, Calderwood has a blackboard in his lecture-room, on which he chalks circles that represent the feelings and the will, with arrows shooting between them. In my class there was a boy, a very little boy, who had been a dux at school and was a dunce at college. He could not make moral philosophy out at all, but did his best. Here were his complete notes for one day: "Edinburgh University; Class of Moral Philosophy; Professor Calderwood; Lecture 64; Jan. 11. 18--You rub out the arrow, and there is only the circle left." Professor Calderwood is passionately fond of music, as those who visit at his house know. He is of opinion that there is a great deal of moral philosophy in "The Dead March in Saul." Once he said something to that effect in his class, adding enthusiastically that he could excuse the absence of a student who had been away hearing "The Dead March in Saul." After that he received a good many letters from students, worded in this way: "Mr. McNaughton (bench 7) presents his compliments to Professor Calderwood, and begs to state that his absence from the class yesterday was owing to his being elsewhere, hearing 'The Dead March in Saul.'" "Dear Professor Calderwood: I regret my absence from the lecture to-day, but hope you will overlook it, as I was unavoidably detained at home, practising 'The Dead March in Saul.' Yours truly, Peter Webster." "Professor Calderwood: Dear Sir,--As I was coming to the lecture to-day, I heard 'The Dead March in Saul' being played in the street. You will, I am sure, make allowance for my non-attendance at the class, as I was too much affected to come. It is indeed a grand march. Yours faithfully, John Robbie." "The students whose names are subjoined thank the professor of moral philosophy most cordially for his remarks on the elevating power of music. They have been encouraged thereby to start a class for the proper study of the impressive and solemn march to which he called special attention, and hope he will excuse them, should their practisings occasionally prevent their attendance at the Friday lectures." Professor Calderwood does not lecture on "The Dead March in Saul" now.