50.0 MB (2.4 MB compressed)
4248 x 4114 pixels
36.1 x 34.8 cm ⏐ 14.2 x 13.7 in (300dpi)
OXFORD SCIENCE ARCHIVE / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY OXFORD SCIENCE ARCHIVE / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY
Descartes' representation of the antagonistic eye muscles, 1692. When E is relaxed A is innervated. Rene Decartes (1596-1650) believed that an animal spirit travelling down hollow nerves C and B contracted the muscles and blew them up, and that they relaxed when the spirit was shut off by valves. From Opera Philosophica by Rene Descartes. Originally published in his Tractatus de homine.
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