Observations on vision : ... Read before the Royal Society of London, May 1, 1794, and published in their Transactions of the same year. Communicated to the Society by George Pearson.

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Observations on vision : ... Read before the Royal Society of London, May 1, 1794, and published in their Transactions of the same year. Communicated to the Society by George Pearson. Credit: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.). Public Domain Mark