Letter from Charles [Herbert] Lees, Physical Laboratory, University of Manchester, to the Royal Society 'Dear Sir, I regret to say that I shall be unable, owing to having to take the chair at an examiner's meeting here on the 15th inst, to be present at the Royal Society meeting on that day, to read my paper on Thermal Conductivities. I am, yours truly, Charles H Lees'. [10 December 1904]