Copy letter from Herbert Rix, to Professor Thomas George Bonney, Fellow of the Royal Society 'Dear Sir, With respect to the paper by yourself and Miss Raisin, I understand there are to be two drawings from specimens under the microscope. Will you let me know whom you suggest as artist, and put me into communication with him, that I may obtain estimates? Yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 21 June 1894