Bertrand Russell, noted English philosopher has been appointed William James Lecturer on Philosophy for the first half of the, next academic year, 1940-41, the university announced today.

He will give a series of about twelve public lectures on the subject "Language and Fact," and will also hold a seminar in the department of Philosophy.

Russell is the author of numerous works in the fields of philosophy, mathematics, social and political, problems, and science; one of his best known books is "Principia Mathematica" written in 1910 in collaboration with Alfred North Whitehead, now professor of Philosophy, Emeritus.