Copy letter from Herbert Rix, to Mr H M White Peake, 42 Edinboro' Road, Walthamstow, Essex 'Sir, I have to acknowledge receipt of your communication of the 22nd inst. [instant] The regulations of the Royal Society require that every communication to be laid before them shall be sent through the medium of a Fellow, who endorses it as suitable to be read to the Society. As the letter is of considerable length and may be of use to you elsewhere, I beg leave to return it herewith. I am, yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 30 March 1896