Wrote Letter L-018 of 1674-12-04 to Henry Oldenburg about optic nerves and sight; enclosed specimen of cow's optic nerve

December 4, 1674
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Text of the letter in the original Dutch and in English translation from Alle de Brieven. The Collected Letters at the DBNL - De Digitale Bibliotheek voor de Nederlandse Letteren

Leeuwenhoek wrote this letter to Henry Oldenburg about:

Colour of the iris of the eye. Anatomy of the optic nerve. Explanation of the conduction of the sensations of sight. Method of examining the cerebral substance. Comments about English criticisms of his observations of the brain. Figure of the transverse section of an optic nerve of a cow is was attached to the letter.