Above, the heads of a Cretan sheep and an Iceland sheep; below, a four horned ram standing on a meadow. Coloured etching by Barlow after J. E. Ihle.

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Credit

Above, the heads of a Cretan sheep and an Iceland sheep; below, a four horned ram standing on a meadow. Coloured etching by Barlow after J. E. Ihle. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.