Painting. [Thomas Graham (1805-1869), chemist] / by Alexander Craig, 1860. Oil on canvas,128x101cm in gilt frame, 140x113.5x4cm. Commissioned by Bennet Woodcroft after the 1837 oil by John Graham Gilbert (1794-1866). Portrait, TQL slightly to L, right hand resting on table beside chemical apparatus. Sitter was a chemist, Master of the Mint and Woodcroft's brother-in-law