SECT. 3] AND EIGHTEENTH CENTURIES 177 



I. That the embryo was nourished by the menstrual blood. 



Beckher, 1633. 



Plempius, 1644. (He did not deny that the umbilical cord was 



functional, but insisted that the blood passing through it was 



menstrual.) 



In 1 65 1 Harvey's work was published. 

 Sennertus, 1654. 

 Seger, 1660. 

 van Linde, 1672. 

 F. Sylvius, 1680. 

 Cyprianus, 1700. 



II. That the embryo was nourished by its mouth. 

 {a) By the amniotic liquid. 



(A) In addition to the umbilical blood. 

 Harvey, 1651. 

 W. Needham, 1667. 

 de Graaf, 1677. 



C. Bartholinus, 1679. 

 van Diemerbroeck, 1685. 

 Ortlob, 1697. 



D. Tauvry, 1700. 

 Linsing, 1701. 

 PauH, 1707. 

 Barthold, 1717. 



S. Middlebeek, 17 19. 

 Teichmeyer, 17 19. 

 Gibson, 1726. 



(B) Alone; the umbilical blood being regarded as un- 

 necessary or of minor importance, 

 Moellenbroeck, 1672. 

 Cosmopolita, 1686. 

 Everardus, 1686. 

 P. Stalpartius, 1687. 

 Bierling, 1690. 



Case, 1696. (Case thought the embryo arose entirely 

 out of the amniotic liquid like a precipitate from 

 a clear solution.) 

 Berger, 1702. 



These persons referred as their principal experi- 

 mental basis to cases in which embryos had been 

 born without umbilical cords, e.g. of those of: 

 Rommelius, 1675 (in Velsch). 

 Valentinius, 1 7 1 1 . 



