ONE TYPE OF EXCHANGE PROFESSOR.

Work in Economics 6b has, since the beginning of the second half-year, been connected with the history of the trade, industry, and commerce of the American colonies just before the Revolution. On Saturday, Professor Channing, whose studies in this period of our history are too well known to require comment here, lectured to the members of the course. In these days of exchange professors--intercollegiate and international--such a move on the part of Professor Gay, who is the regular lecturer, suggests a practice that might be followed at Harvard more frequently than is at present the case. Often, especially in Political Science and Business courses, experts from the outside world are invited in to lecture. Where we have so many specialists in our own midst, might we not in some of our general, and at times superficial courses, be treated now and then to an intimate discussion by one of these men?