Drawing, lens of turtle by [Robert Kaye Greville] Plate 6, number 5, figures 1-2 showing the anterior and posterior surfaces of the lens of the turtle. Inscribed with publication and plate details. An ink inscription above figure 1 reads 'This figure must be inserted' and below 'To be copied from A Fig. 1 No. II'. An inscription below figure 2 reads 'To be shaded like the other Figures, the Fibres to be made like the rest'. Not signed. Watermarked 'J What[...] Turke[...] 18[...]'. The manuscript for this paper is wanting. Subject: Zoology / Physics Published in Philosophical Transactions as part of paper titled 'On the anatomical and optical structure of the crystalline lenses of animals. Continued from a former paper (Phil. Trans. 1833, p. 332.)' by David Brewster. Received by the Royal Society on 26 November 1835. Read 21 January 1836. [1835]