Painting, dugong sexual organs by [William Clift] Plate 30 showing the penis of an eight-foot-long male dugong (figure 1); vagina and uterus of a four-foot-six-inches-long female dugong (figure 2). The work is inscribed with publication and plate details. Not signed. Royal Society stamp verso. Watermarked 'W Turner & Son'. Subject: Zoology / Anatomy Published in Philosophical Transactions as part of paper titled 'Particulars respecting the anatomy of the Dugong, intended as a supplement to Sir T. S. Raffles' account of that animal' by Everard Home. Read to the Royal Society on 29 June 1820. [1820]