From Embryology

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Fig. 52. Section Through the Eye of a Fowl on the Eighth day of Development

To show the iris and cornea in the process of formation. (After Kessler.)

  • ep. epiblastic epithelium of cornea
  • cc. corneal corpuscles growing into the structureless matrix of the cornea
  • dm. Descemet's membrane
  • ir. iris
  • cb. mesoblast of the iris (this reference letter points a little too high).

The space between the layers dm. and ep. is filled with the structureless matrix of the cornea.

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)


Foster, M., Balfour, F. M., Sedgwick, A., & Heape, W. (1883). The Elements of Embryology. (2nd ed.). London: Macmillan and Co.

The Elements of Embryology (1883)

Volume 1 The History of the Chick: Egg structure and incubation beginning | Summary whole incubation | First day | Second day - first half | Second day - second half | Third day | Fourth day | Fifth day | Sixth day to incubation end
Volume 2 The History of the Mammalian Embryo: General Development | Embryonic Membranes and Yolk-Sac | Organs from Epiblast | Organs from Mesoblast | Alimentary Canal | Appendix

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current10:28, 11 January 2011Thumbnail for version as of 10:28, 11 January 2011715 × 313 (44 KB)S8600021 (talk | contribs)FIG. 52. SECTION THROUGH THE EYE OF A FOWL ON THE EIGHTH DAT OF DEVELOPMENT, TO SHEW THE IRIS AND CORNEA IN THE PROCESS OF FORMATION. (After Kessler.) ep. epiblastic epithelium of cornea ; cc. corneal corpuscles growing into the structureless matrix of t