Etching by W Hole of Ewart who was a profesor of natural history at Aberdeen, and then at Edinburgh. Ewart researched animal breeding and hybridisation, and his experiments disproved the theory of telegony (a belief in the influence of a previous sire on offspring from other sires, born to the same mother). He is depicted in his laboratory examining a glas slide, surrounded by specimens, animal skeletons and tanks of eggs and herring fry. On the floor are starfish, and in the background a dog marked 'HMS' has stolen a fish. From 'Quasi Cursores'.
© Science Museum / Science & Society Picture Library