Copy letter from Herbert Rix, to Dr J H Mackay [University of Glasgow] The Royal Society have not received a filled in form for Mackay's whole paper, but only the abstract, so Rix encloses a form to be returned [not included]. Also asks Mackay to add the total number of plates he needs to the number 925, which will give the total number to be printed by Messrs Maclure and Macdonald. 8 February 1888