Copy letter from Herbert Rix, to Professor Marshall Ward 'Dear Sir, Dr Michael Foster wishes me to send you the accompanying paper by Dr Macdonald, and to ask you whether, in your opinion, it is a suitable paper for our Proceedings ['Proceedings of the Royal Society']. In the event of an affirmative answer, he also wishes me to ask whether you think the plate ought to be reproduced. I am yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 10 October 1889