Drawing, spheroidal lens of salmon by R K [Robert Kaye] Greville Plate 4, figure 1 showing the interior and posterior hemispheres of the spheroidal lens of the salmon. Inscribed with publication and plate details. Signed in ink top right upside-down, 'R. K. Greville, delt.', but this is struck out. 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]