A number of Harvard professors are lecturing this year at the Brooklyn Institute of Arts and Sciences. Professor George C. Whipple will give four illustrated lectures on "Sewerage from the Sanitary and Economic Points of View." Six lectures on "Emerson and Carlyle" will be given by Professor Bliss Perry. Professor H. Langford Warren '83 will give a series of five illustrated lectures on "The Colonial Architecture of New England." "The Drama in the Making" is the subject of a course by Professor George P. Baker '87; and Professor Arthur E. Kennelly will deliver a series of five illustrated lectures on "The Elements of Hyperbolic Functions and their Application to Electrical Engineering."