PAUL D STEWART / SCIENCE PHOTO LIBRARY PAUL D STEWART / SCIENCE PHOTO LIBRARY
Unicorn, 17th century. Unicorns were still being included as potentially real animals in natural history books despite the revelation that the horn came from the narwhal (Monodon monoceros). This illustration is by Swiss-born German engraver Matthaus Merian the Elder (1593-1650). It is a hand-coloured copperplate engravings from 'Historiae Naturalis' (John Jonston, Amsterdam, 1657-65).
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