984207 Portrait of Thomas Henry Huxley (b/w photo) by Lock and Whitfield (19th century); Private Collection; (add.info.: Thomas Henry Huxley, British biologist, known as \'Darwin\'s Bulldog\' for his advocacy of Charles Darwin\'s theory of evolution. Photography by Lock & Whifield. Woodburytype published in Men of Mark, published by Sampson Low, circa 1880.); Look and Learn / Rosenberg Collection; English, out of copyright.