The sentiment expressed in the first part of the Princeton letter published today is obviously so unfair as to need little comment, and yet it may be well for us to state the case as it actually is. There is now a genuine and laudable effort making to exclude professionalism from college athletics. As a first step in this movement it has seemed necessary that all the colleges in the league be required to furnish certificates that the members of their athletic teams are bona fide members of their college. In accordance with this rule Harvard has sent to Princeton the certificates of her own players, and at the same time has protested Princeton's men, her object being to obtain return certificates for the men whom Princeton intends to play next Saturday. The demand of Harvard does not offset professionalism at Princeton any more than it does at Cambridge, and seems, therefore, thoroughly fair and sportsmanlike. Harvard certainly is not desirous of exacting conditions from Princeton which she is not willing to fulfil her self. Because she cannot be injured by a challenge is no reason for calling her present protest underhanded. It is for the best interests of all colleges concerned that the players of each should be challenged in order that college athletics may be purified as far as possible. As for the unfairness of our protesting four of Princeton's men on purely professional grounds we fail to see the strength of Princeton's objection since a like privilege belongs to her. It looks very much as if the shoe pinched too much for Princeton's comfort.