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Ernst Haeckel’s Jellyfish

Animals & Beasts, Natural World

Ernst Haeckel’s Jellyfish

Floating Phantoms: A. G. Mayer’s *Medusae of the World* (1910)

Animals & Beasts, Natural World

Floating Phantoms: A. G. Mayer’s Medusae of the World (1910)

Many-Colored Misdirection: *Concealing-Coloration in the Animal Kingdom* (1909)

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Animals & Beasts, Natural World, Science & Medicine

Many-Colored Misdirection: Concealing-Coloration in the Animal Kingdom (1909)

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