In a series of recent articles Professor Frederick Tupper has put forward, with great skill and learning, a view regarding the plan of the Canterbury Tales which demands, on account of its originality and its importance, the most respectful and open-minded consideration. As one who was fortunate enough to be present at the inception of the theory, and who welcomed enthusiastically the promise of fresh light which it seemed to hold, I am free, I think, from antecedent prejudice. But as the theory has been developed in article after article I have felt myself compelled to dissent, with steadily strengthening conviction, from Professor Tupper's contention, and it is the purpose of this article to make clear the grounds on which it seems to me that that contention, in spite of its uncommon plausibility, must be rejected. All students of Chaucer are under a debt to Mr. Tupper, whether they agree with him or not. A fresh and original conception, maintained with an enthusiasm that vivifies dead facts, is of all too rare occurrence, and its “Forth, beste, out of thy stal” is wholesome stimulus. But Mr. Tupper would be the last to wish his vigorous challenge to gird up our loins and give a reason for the faith that is in us, to go unanswered. He has already offered hospitality to various objections in his articles, but he and his critics have not met, apparently, on common ground. In my own case I wish to accept, without question, his own choice of field and weapons.