The Yale corporation has accepted the resignation of James Dwight Dana, the oldest professor connected with the university. Professor Dana is one of the foremost American scientists, and is obliged by advanced age to abandon further work. He is eighty-one years old and graduated from Yale in the class of 1833. He returned to college as tutor and studied under Stillman the elder, and succeeded to a full professorship fifty years ago. Since then he has had full charge of the department of natural science. He has been honored by Harvard and other colleges in America and by German universities. The department has been placed in the hands of Professor H. S. Williams, who has been associated with Professor Dana for a number of years.