Memoranda, on a paper 'The transmission of beet mosaic and beet yellows viruses by aphides; a comparative study of a non-persistent and a persistent virus having host plants and vectors in common' by Marion A Watson Sectional Committee: Botany Communicated by Henry Gerard Thornton. Archibald vivian Hill has sent the paper to Kenneth Manley Smith for report, can the paper be passed if this is favourable? Ernest John Maskell agrees to pass the paper if the report is favourable, and suggests an amendment to the title. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 6 December 1944. 4 December 1944