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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    period in embryonal life than are the connect- ive-tissue cells of the middle or intermediate layer — the mesoblast, from which the dermis originates. As early as the 35th day (as nearly as I am able to ascertain) the epidermis presents- two layers of cells; but at this period it cannot be regarded as a membrane composed of two 1am- in;v, for the external cells haye not yet attained the requisite age to mature them into the horny bodies that constitute the corneous layer. The cells constituting the epidermis must, therefore, though differing in form, be regarded, at this stage, as belonging exclusively to the Malpigh- ian stratum (in its broader sense). But soon the transforming hand of time will convert them into the corneous layer; when the oral epider- mis will be, like that of the skin, divisible into two laminae.* If we examine these two epi- * In his last edition (5th), under the head of Epithe- lium of the cavity of the mouth,' Kolliker remarks that the elements that constitute this epithelium [epidermis] are not divisible, like the epidermis [of the skin], into two clearly distinct lamina?, but constitute one connected layer, more resembling the mucous layer, but representing also ^the corneous layer. It may In' true that in some portions this epidermis