Of falfe conceptions. 



Obfervations on the produ&ion 

 of monfters. 



415. Of extra-uterine conceptions, 

 Of the FOETUS IN UTERO. 



416. Of the Placenta. 



Its ftru6lure and filiation. 



Of its connexion with the 

 Uterus. 



417. Of the umbilical cord. 



418. Of the veffels which compofe it, 

 and their peculiarities. 



419. Of the Chorion and Amnios. 



420. Of the Liquor Amnii. 

 421* *Of the Allantois. 



422. Remarks on the mode of com- 

 munication between the mother 

 and the foetus. 



I 423- Of 



* Sec comparative anatomy. 



