On next Monday evening, Oct. 22, will occur the lecture of Prof. Sidney H. Morse, of Chicago, in the Unity Club series. Prof. Morse is a sculptor of renown. He was a personal friend of many of the conspicuous literary figures of this and the last generation, and has made busts of many of them. Holmes, Emerson, Channing, Longfellow, and Whittier areamong the number, and to these must be added several names from across the Atlantic. Aside from his unquestioned ability as an artist, he is a delightful lecturer, illustrating his subject, " The Sculptor's Art," by making a bust in the presence of the audience and by numerous blackboard drawings. To all persons interested in true art Prof. Morse's lecture will prove a great sourse of interest.