Observations on abortion : containing an account of the manner in which it takes place, the causes which produce it, and the method of preventing or treating it / By John Burns.

  • Burns, John, 1774-1850.
Date:
1807
Catalogue details

Licence: Public Domain Mark

Credit: Observations on abortion : containing an account of the manner in which it takes place, the causes which produce it, and the method of preventing or treating it / By John Burns. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

    18/206 (page 8)
    I 8 is contained in a double membrane; the internal one is the amnion, and pos- sesses no distinct vessels; the external one is the chorion, and is from the first vascular, and soon becomes so much so, that its vessels have by some been de- scribed as forming a distinct tunic. From whsit has been said, it will be evident, that when this vesicle does reach the uterus, it will be received among the primary vessels, which will surround it whilst the secondary vessels or decidua interna will lie before it, and prevent any direct communication be- twixt it and the uterine cavity. But it cannot long remain thuS, for in propor- tion as the vesicular part of the ovum increases, it will push the decidua in- terna before it, and encroach on the cavity of the uterus. This circumstance.