The essentials of histology : descriptive and practical for the use of students / by E.A. Schäfer.
- Edward Albert Sharpey-Schäfer
- Date:
- 1898
Licence: Public Domain Mark
Credit: The essentials of histology : descriptive and practical for the use of students / by E.A. Schäfer. Source: Wellcome Collection.
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![inner molecular layer (figs. 357, h ] 360, A, B, c), in which the bodies of these cells are often partly embedded. The cells in question have been regarded as of the nature of neuroglia-cells, but according to Cajal they are probably all nerve-cells. He has termed them Fig. 358.—Section through the inner layers oe the retina of a bird, PREPARED BY GOLGl'S METHOD. (R. y Cajal.) A, nerve-fibres of optic nerve layer ; B, some of these fibres passing through the inner molecular layer to end in an arborisation at the junction of the inner molecular and inner nuclear layers. The layers in this and in the two succeeding cuts ai-e numbered in correspondence with the layers in fig. 355. amacrine-cells, from the fact that they are destitute of a long process; but some have been noticed to give oflP, besides the branching pro- cesses or dendrons, which ramify in the molecular layer, an axis- cylinder process which may extend into the nerve-fibre layer. There Fig. 359.—Section across the molecular and ganglionic layers of bird's RETINA, PREPARED BY GOLGl's METHOD. (R. y Cajal.) Three or four g-anglionic cells, A, B, C, and the terminal arborisations of their dendrons, a, h, c, in the molecular layer, are shown. are also some cells in the outer part of the granule layer which send their processes into the outer molecular layer. These are the Jiorizontal-cells of Cajal (also termed spongioblasts of outer molecular layer). The fibres of Muller have nucleated enlargements (fig. 360, j) in the inner nuclear layer. The outer ■molecular layer is thin, and is composed mainly of the arborisations of the inner granules, of the rod- and cone-fibres, and of the horizontal cells (figs. 357, 360).](https://iiif.wellcomecollection.org/image/b20400986_0336.jp2/full/800%2C/0/default.jpg)
