On poison in the shade of walnut trees.

Pliny on the dangers of being in the shade (Naturalis Historia 17.18): Iam quaedam umbrarum proprietas: iuglandum gravis et noxia, etiam capiti humano omnibusque iuxta satis. Now there is a certain distinctive property to some shades: that of walnut trees is unwholesome and harmful, both to human life, and to anything else close enough. He […]

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