アメリカ自然史博物館のインスタグラム(amnh) - 8月14日 04時24分

Frozen Urine - Micrographia (1667), the first book in English to illustrate the microscopic world, was popular in part because it presented an enormous range of subjects. This image, by author and illustrator Robert Hooke, depicts geometric formations on frozen urine (presumably his own). #amnh

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