Copy letter from Sir William Bate Hardy, FRS, Secretary of the Royal Society; to Dr Cranstan Walker; 61 Newhall Street, Birmingham Apologises that his paper was not acknowledged, advises his instructions were not carried out. He gave the paper to a friend to consider critically, but he has not had time, so now Sir William Bate Hardy, FRS, is reading it himself. He will write to him about it as soon as possible. 8 January 1920