'Cuprum sulphuratum' Size:XS: 40 x 30cm His right hand holds a

His right hand holds a pen poised over a sheet of paper on a table to the left of the picture as viewed

Photographed in a garden

known as the pleura in regards to the lungs

Brush of Loughborough

Specimen termed 'Arseniate of copper' with two details of crystals

'Cuprum sulphuratum' Size:XS: 40 x 30cm His right hand holds aSpecimens of copper sulphate, here termed 'sulphuret of copper', with a figure showing its crystalline form. Plate 77 from British mineralogy: or coloured figures intended to elucidate the mineralogy of Great Britain, by James Sowerby, volume 1 (London, R. Taylor & Co., 1804). The accompanying text states that 'This copper ore is not uncommon; but the form of the crystallization in this specimen is either rare, or has been hitherto overlooked