An interesting press cutting on Lowell and Mars sent by William; enclosing a cutting (not present) about Kipling; Prof Poynting to reply to Lowell's mathematical paper; ARW's book (presumably Is Mars Habitable?) finished, chapter on temperature of Mars sent to Poynting for comment, MS to go to Macmillan; possibility of mean temperature of planets being affected by rate of rotation, Osmond Fisher's opinion differs from ARW's, Stefan's Law.