PHYSICAL AND LITERARY. 475 



to the chorion ; and the arteries of the u- 

 terus had been filled with inje6^ion as 

 well as the veins. 



In five of the fubjefls mentioned by 

 my father, in Medical EfTays ^^ two of 

 which I faw, the placenta adhered to the 

 forepart of the womb ; while in our pre- 

 fent fubjecl, and thofe of Vater and Albi- 

 nus, the placenta was fixed to the back 

 part of it ; and Dr Smeliie afiures me, he 

 has found it attached to the os uteri. I 

 think therefore it is plain, that there is no 

 particular part to which we can fay the 

 placenta is always fixed : From which 

 it may be juftly concluded, that the cho- 

 rion is not all equally capable of being 

 placenta ; and that the placenta does not 

 owe its exiftence to the energy of any par- 

 ticular fpot of the womb ; but that it is 

 an original part which adheres to what- 

 ever place, not only of the womb, but of 

 the Fallopian tubes f or abdomen, J it 



hap- 



* Vol. 2. Art, 9. 



t See two examples of this in De Graat de tnuHer. orga- 

 nig,cap,.xiv. quoted from Riolan. 



1 An example of this, in liift. de I'Acad.desSciences j'ji6. 



