Carte de visite photograph by H Petschler & Co of William Crawford Williamson MRCS, LSA (1816-1895). Williamson studied in Manchester and at University College, London, and qualified as a surgeon in 1840. He was a popular scientific lecturer and, in 1851, became the first Profesor of Natural History, Anatomy and Physiology at Owen's College, Manchester. He was also interested in plants, and was one of the founders of paleo-botany. He was elected a fellow of the Royal Society in 1854.
© Science Museum / Science & Society Picture Library