Painting, 'African ostrich [gizzard]' by [William Clift] Plate 16 showing an external view of the cardiac cavity and gizzard of the African ostrich, one-sixth scale. The work is inscribed above with publication and plate details and upper right 'African Ostrich'. Not signed. Royal Society stamp verso. Subject: Zoology Published in Philosophical Transactions as part of paper titled 'On the different structures and situations of the solvent glands in the digestive organs of birds, according to the nature of their food and particular modes of life' by Everard Home. Read to the Royal Society on 18 June 1812. 1812