Nobody who has taught both elective and prescribed studies need be told how the instruction in the two cases differs. With perfunctory students, a teacher is concerned with devices for forcing his pupils onward. Teaching becomes a secondary affair; the time for it is exhausted in questioning possible shirks. Information must be elicited, not imparted. The text-book, with its fixed lessons, is a thing of consequence. It is the teacher's business to watch his pupils, to see that they carry off the requisite knowledge; their business, then, it soon becomes to try to escape without it. Between teacher and scholar there goes on an ignoble game of matching wits, in which the teacher is smart if he can catch a boy, and the boy is smart if he can know nothing without being found out. Because of this supposed antagonism of interests American higher education seldom escapes an air of unreality. We seem to be at the opera bouffe. A boy appears at the learning-shop, purchases his parcel of knowledge, and then tries to toss it under the counter and dodge out of the door before the shopman can be quick enough to make him carry off the goods. Nothing can cure such folly except insistence that pupil's neglect is not teacher's injury. The elective system points out to a man that he has something at stake in a study, and so trains him to look upon time squandered as a personal loss. Where this consciousness can be presumed, a higher style of teaching becomes possible. Methods spring up unlike formal lectures, unlike humdrum recitations. The student acquires--what he will need in after life--the power to look up a single subject in many books. Theses are written; discussions held; in higher courses, problems of research supersede defined tasks. During 1860-61, fifty-six per cent of the Harvard undergraduates consulted the college library; during 1883-84, eighty-five per cent.