File:EB1911 Planarians - Double Eye found on the brain of Polyclads.jpg

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EB1911_Planarians_-_Double_Eye_found_on_the_brain_of_Polyclads.jpg ‎(794 × 442 pixels, file size: 95 KB, MIME type: image/jpeg)

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English: Double Eye found on the brain of Polyclads. Each consists of a pigment-cup and of four nerve-end cells (rod-cells) in which the nerves terminate. Legend: N, nerve fibres and cells. Pc, pigment-cell. Rc, rod cell.
Date published 1911
Source “Planarians,” Encyclopædia Britannica (11th ed.), v. 21, 1911, p. 710, fig. 9.
Author From Cambridge Natural History, vol ii. “Worms, &c.” After Lang.
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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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current17:32, 27 December 2018Thumbnail for version as of 17:32, 27 December 2018794 × 442 (95 KB)Bob Burkhardt (talk | contribs){{Information |description ={{en|1=Double Eye found on the brain of Polyclads. Each consists of a pigment-cup and of four nerve-end cells (rod-cells) in which the nerves terminate. Legend: ''N'', nerve fibres and cells. ''Pc'', pigment-cell. ''Rc'', rod cell.}} |date =published 1911 |source =“Planarians,” ''Encyclopædia Britannica'' (11th ed.), v. 21, 1911, p. 710, fig. 3. |author =From ''Cambridge Natural History'', vol ii. “Worms, &c.” After Lang. |permission =...

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