Drawings, upper incisor of Hydrochoerus capibara by [W Wing] Plate 46, figures 45-46 showing sections of the upper incisor of the Hydrochoerus capibara [Hydrochoerus hydrochaeris; capybara]. Inscribed with figure, publication, and plate details. Each figure is dated in graphite, figure 45 as 24 January 1850 and figure 46 as 23 January 1850. Not signed. Subject: Zoology Published in Philosophical Transactions as part of paper titled 'On the structure of the dental tissues of the order Rodentia' by John Tomes. Received by the Royal Society on 19 February 1850. Read 30 May 1850. January 1850