Manuscript, 'Further observations on the anatomy and physiology of nautilus' by John Denis Macdonald Macdonald presents his observations on species of nautilus, including observations on their ears and eyes. Annotations in pencil throughout. Followed by one figure in coloured ink of nautilus anatomy. Subject: Zoology / Malacology Received 13 January 1857. Read 19 February 1857. Communicated by Captain [Henry Mangles] Denham. A version of this paper was published in volume 8 of the Proceedings of the Royal Society as 'Further observations on the anatomy and physiology of Nautilus'. April 1856