The origin and formation of the dental follicle : The first memoir on the development of the teeth / By Drs. Ch. Legros and E. Magitot. A translation from the French, with introduction and notes, by M.S. Dean. Authorized and rev. by Dr.Magitot, the surviving author.

  • Legros, Charles, 1834-1873.
Date:
1880
Catalogue details

Licence: Public Domain Mark

Credit: The origin and formation of the dental follicle : The first memoir on the development of the teeth / By Drs. Ch. Legros and E. Magitot. A translation from the French, with introduction and notes, by M.S. Dean. Authorized and rev. by Dr.Magitot, the surviving author. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    permeable by various kinds of liquids; which, after passing through the softer portions of the epidermis and the basement membrane, may be absorbed by the vessels of the dermis (proper mucous membrane, corium).* tTow, lest your patience be too heavily taxed, we will take only a very hasty glance at the sub- jacent layer of the mucous membrane, ignoring, for the time being, the existence of the basement membrane. Lying immediately beneath the epidermis we find a fibro-vascular membrane of variable thick- ness, which we call the dermis (the proper mucous membrane, the mucosa, mucous layer, * Kolliker (Loc. Cit., 5th ed.j says: The epithelium of the mouth, though thick, is very pervious, a characteristic which distinguishes it from the epidermis [of the skin], of which the mucous layer [stratum Malpighii] alone possesses this quality. It allows the various kinds of liquids to pass through it from without inward, which, when brought in contact with the mucous membrane [the dermis], may be absorbed by the vessels, or become cognizant to the nerves received by this membrane. Kolliker does not recognize the existence of nerves in any part of the epidermis. If the experiments of Langer- ghans and Podcopaew are reliable, the liquids need only enter the Malpighian layer to be brought in contact with the nerve filaments that penetrate this soft layer.