Human skull, rear view , with details showing individual bones: above, a tonal etching of the skull, below, an outline diagram. Etching by or after J. Gamelin, 1778/1779.

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Human skull, rear view , with details showing individual bones: above, a tonal etching of the skull, below, an outline diagram. Etching by or after J. Gamelin, 1778/1779. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.