Sir Henry Thomas de la Beche, VPRS, geologist, 1848.
© Science Museum / Science & Society Picture Library
Engraving by William Walker after a painting by HP Bone of Sir Henry de la Beche (1796-1855). De la Beche was Director General of the Geological Survey of the United Kingdom. He was also President of the Geological Society. He is shown here with a hammer for taking rock samples.