Orangutan and chimpanzee prints, from Dr Henry Faulds's Guide to Finger-print Identification, 1905. Faulds, a Scottish scientist, was an early developer of fingerprint analysis. On the left are prints from the index toe of the left foot (top) and index finger of left hand (bottom) from a young orangutan. On the right are corresponding prints from a young chimpanzee. Both animals were kept at the Zoological Society's Gardens (now London Zoo) in Regent's Park, London.
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