Outlines of the theory and practice of midwifery / by Alexander Hamilton, M.D. F.R.S. Edin. ; Professor of midwifery in the university, and member of the Royal College of Surgeons, Edinburgh.

  • Hamilton, Alexander, 1739-1802.
Date:
MDCCXC [1790]
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of the theory and practice of midwifery / by Alexander Hamilton, M.D. F.R.S. Edin. ; Professor of midwifery in the university, and member of the Royal College of Surgeons, Edinburgh. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    amnion; is the firmed, fmootheft, and moft trans- parent of all the membranes, except the amnios; and, when feparated from it, has a confiderable de- gree of tranfparency. It adheres pretty clofely to the internal furface of the cake, which it covers imme- diately under the amnios, and gives alfo a coat to the umbilical cord. It is connected to the amnion by means of a gelatinous fubftance, and is eafily feparated from it. 4. The Amnion, or internal membrane, forms the external coat of the umbilical cord. This internal lamella of the membranous bag is by much the molt thin, attenuated, and tranfparent of the whole ; and its veflels arc fo delicate, that they can hardly be dif- covered ; their diameters are fo fmall, as to be inca- pable in their natural (rate of admitting globules of red blood. It is, however, firmer and flronger than the chorion, and gives thegreatefl refiftance in the breaking of the membranes. The fmall bag, called vefictda umbiticalis, formerly defcribed, and only confpicuous in the early months from its fituation, is placed between the amnion and chorion, near the the attachment of the cord ; and, from the colour of its contents, has been miftaken for the urachus: but there is no allantois in the hu- man fubject. The allantois in quadrupeds is an oblong mem- branous fac, or pouch, placed between the chorion G erf!