File:1911 Britannica-Arachnida-Watase.png

1911_Britannica-Arachnida-Watase.png(520 × 398 pixels, file size: 216 KB, MIME type: image/png)

Summary

Description
English: Section through a portion of the lateral eye of Limulus polyphemus, showing three ommatidia—A, B and C.
hyp, The epidermic cell-layer (so-called hypodermis), the cells of which increase in volume below each lens, l, and become nerve-end cells or retinula-cells, rt; in A, the letters rh point to a rhabdomere secreted by the cell rt; c, the peculiar central spherical cell; n, nerve fibres; mes, mesoblastic skeletal tissue; ch, chitinous cuticle.
(From Korschelt and Heider after Watase.)
Date
Source Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 294
Author Encyclopædia Britannica, 1911

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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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