Jourdain sends a manuscript of BR's, "The Philosophical Importance of Mathematical Logic", which Jourdain has translated from the Revue de métaphysics <sic> et de morale and added notes; and which BR has revised. "Please send proof to Russell." "The emphasis on form in this article will, I think, give you pleasure. According to a letter I had from Russell the other day, his views on the foundations of logic are undergoing some change, and I expect some new results with regard to what he calls the 'logical constants' and the part they play in form, soon."