Observations on the anatomy of the skin of a species of muraena / by Andrew Clark.

  • Clark, Andrew, 1826-1893.
Date:
[between 1850 and 1859?]
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the anatomy of the skin of a species of muraena / by Andrew Clark. 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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    germinal membrane, is granular, occurs in rounded or stellar masses, and is not situated in the interior of cells, though it may possibly have had a cellular origin. The deep surface of this germinal membrane of the follicles is surrounded by a thick layer of ine- lastic fibrous tissue, which gives support to and deter- mines the form of the gland. This layer is composed of distinct fibres, which appear as if regularly woven into each other, and which at the mouth of the gland are lost in the fibrous extension lying beneath the germinal membrane, and containing in its meshes the granular pigment of the skin. Glands of the general surface. In addition to the openings seen along the lateral line and visible to the naked eye, the general surface, as before stated, is studded with other openings of a similar character, but so much smaller as to become vi- sible only to the assisted sight. The diameter of these openings is about of an inch, and nearly uniform throughout. They are rounded or oval; have their margins sharply defined, slightly elevated above the surface and surrounded by thickly set granules of pig- ment. In a vertical section of the skin, examined by transmitted light, membranous tubes are seen to pro- ceed onwards from these openings to the subcutaneous filamentous tissue in which they terminate. The phy- sical properties of this latter tissue offer a striking contrast to those of the skin proper. The latter is hard and dense, and thin sections may readily be made to transmit the light: the former is loose, soft.