The distribution of blood vessels in the retinae of mammals / by James W. Barrett.

  • James Barrett
Date:
[1885?]
Catalogue details

Licence: Public Domain Mark

Credit: The distribution of blood vessels in the retinae of mammals / by James W. Barrett. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    the distinction was not easily seen, I have used the collective term “ internuclear layer.” The place of union of these two parts is marked (especially in the Guineapig) by the presence of a membranous expansion, possibly the “ membrana fenestrata” of Krause'; this represents the place of union of the nerve and epithelial layers of the retina. For the sake of convenience I have named the outer division of the “ internuclear layer ” the “ fibrous layer ”; the inner division, the true “ outer molecular,” “ outer reticular ” or “ outer granular layer ”, and the intermediate membrane the “ dividing membrane.” The following tabular statement of the arrangement of the layers of the retina of Man, of the Chacma Baboon, and of some other mammals, will serve to illustrate my views. (1) Pigment layer. (2) Bod and cone layer. (3) External limiting membrane. (4) Outer nuclear layer. (5) Fibrous layer. (6) Dividing membrane. (7) Outer reticular, outer molecular, or outer granu- lar layer. (8) Inner nuclear layer. (9) Inner reticular, inner molecular, or inner granular layer. (10) Ganglion cell layer. (11) Nerve fibre layer. (12) Internal limiting membrane. In a diagrammatic^ representation of a section of the human retina Schultze did not indicate this division of the internuclear layer, but in another diagrammatic^ section of the macula lutea (copied by Schwalbe^) he represented it. He referred to the outer part as the “aussere Faserschicht,” and to the inner part as the “aussere granulirte Lage.” To the dividing membrane I have not seen a reference. 1 “Die Nerven-Endigung in der Eetina.” Archiv fiir mikro. Anat. Bd. xii. S. 742. 2 Human and Comparative Histology. Edited by S. Strieker. Vol. iii. p. 219. ® Ihid. p. 285. ^ Handhuch der gesammten Augenheilkunde. Von A. Graefe und T. Saemisch. Bd. i. S. 431. I = Internuclear layer.
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