SIGMA XI LECTURE, GIVEN BY JEANS, TO BE OPEN TO PUBLIC

It has been announced that Sir James Jean's lecture, "The Annihilation of Matter", to be given before the Harvard Chapter of the Sigma XI Society on May 26, will be open to the public. Those wishing to attend the talk, which will be given in Sanders Theatre, are urged to secure seats reserved on the floor and in the first balcony. These may be obtained by sending, prior to May 23, a self-addressed, stamped envelope to Kirtley F. Mather, secretary of the Harvard Chapter of Sigma Xi, Geology Museum, Oxford Street.