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Doctrine of signatures: (above) a plant (arum) with seed-pods resembling the horn of a unicorn, and (below) a unicorn's head. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection
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Doctrine of signatures: (above) a plant (antirrhinum)) with seed-pods resembling the head of a calf, and (below) the head of a calf. Coloured ink drawing, c. 1923, after G.B. Della Porta.
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Doctrine of signatures: (above) a plant with roots resembling the human hand, and (below) a hand. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection
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Figurine en terre cuite du prophète Balaam. Créé par Tommaso Porlezza Della Porta (1546-1606). En date du 16e siècle Photo Stock - Alamy
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