Copy letter from William Bate Hardy, Secretary of the Royal Society; to Dr. J. A. Hewitt; King's College, W.C.2. Writes to clarify the comments of the referees of Dr. J. A. Hewitt's papers. Explains that the general recommendation is that one paper should be made of the two, and that it is the experimental part of the first that should be compromised. 7 February 1923