SECT. 3] AND EIGHTEENTH CENTURIES 179 



Rayger and Gayant, who injected a blue dye into the 

 foetal circulation and found it again in the maternal. 

 Therefore he regards it as continuous.) 



Mery, 171 1. (Mery combated Falconnet's view of the 

 separate circulations. He said that he had not himself 

 tried Falconnet's experiment, but that some students 

 had, and could not repeat it.) 



Aubert, 1 7 1 1 . (Narrative of a case in which the um- 

 bilical cord had not been tied at the maternal end and 

 the mother had nearly bled to death through it.) 



Nenterus, 17 14. 



Wedel, 1 71 7. 



Bellinger, 171 7. (Bellinger believed that the maternal 

 blood was transformed by the embryonic thymus gland 

 into proper nourishment for itself, after which it was 

 secreted into the mouth by the salivary ducts and so 

 went to form meconium without the necessity for de- 

 glutination. Heister's comments on this extraordinary 

 theory are worth reading. Perhaps Bellinger was in- 

 debted to Tauvry for his idea of the importance of the 

 thymus gland. Tauvry had drawn attention in 1700 

 to its diminution after birth.) 



de Smidt, 17 18. 



Dionis, 1724. 



(c) By menstrual blood. 



Plempius, 1644. 



(d) By uterine milk. 



Ent, 1687. 



Camerarius, 17 14. {Opinio conciliatrix!) 



F. Hoffmann, 1718. 



{e) By the amniotic fluid. 



Vicarius, 1700. 

 Goelicke, 1723. 



IV. That the embryo was nourished by pores in its skin. 



Deusingius, 1660. 

 Nitzsch, 1 67 1. 

 Stockhamer, 1682. 



This was suggested on the ground that in the earlier stages of 

 development there is no umbilical cord. In 1684 St Romain argued 

 against it on the ground that, if it were true, the embryo would 

 dissolve in the amniotic liquid. 



