Cod eye lens under polarised light Size:S: 30 x 25cm This cartoon depicts the blind

This cartoon depicts the blind Postmaster General

Antiquties from Westminster Hall

'The industrious 'prentice out of his time and married to his master's daughter'

5 in: A voyage round the world

County Antrim

Cod eye lens under polarised light Size:S: 30 x 25cm This cartoon depicts the blindPlate 12 figures 1 6 from the paper 'On the structure of the crystalline lens in fishes and quadrupeds, as ascertained by its action on polarised light', by David Brewster, Philosophical Transactions of the Royal Society, vol. 106 (1816), pp. 311 317. Brewster compares the structures displayed by a fish eye lens with those of a sphere of crown glass (figure 5). The paintings are inscribed above with publication and plate details. Not signed. Royal