Although the success of class day must depend largely upon the officers of the senior class, the class itself must be depended upon to do its share. In the case of the class song, the senior class has certainly been very negligent. The rehearsals have not been attended as they should have been, and many of the class do not seem to know the song. As it is absolutely necessary for the success of the exercises around the tree that the song should be learned by the class, the chorister is especially anxious that the last two rehearsals be largely attended. An extra rehearsal will be held at two o'clock this afternoon, in Boylston, and at this as well as the last rehearsal, at seven-tomorrow night, the attendance should be large.