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SECT. XLIII. 



OP THE DIFFERENCES IN THE SYSTEM BEFORE AND 

 AFTER BIRTH.* 



623. From what has been said relatively to the 

 functions of the foetus still contained within its mother 

 and immersed as it were in a warm bath, there must 

 evidently be a considerable difference between its ani- 

 mal functions and those of the child that is bom and 

 capable of exerting its will. The chief points of dif- 

 ference we shall distinctly enumerate. 



624. To begin with the blood and its motion, this 

 fluid is remarkable both for being of a darker red, 

 incapable of becoming florid on the contact of atmos- 

 pheric air, and for coagulating less readily and per- 

 fectly than after birth.f Its course too is very different 

 in the foetus whose circulation is connected with the 

 placenta and who has never breathed, from its course 



* On the subject of this section consult among numerous others, Trew, De 

 differ, quibusdam inter hominem natum et nascrndum intercedentibus. Norimb. 

 1736. 4to. 



Andr. and Fr. Rocsslein (brothers), De differ entiis inter fat turn et adult urn. 

 Ibid. 1783. 4to. 



Ferd. G. Danz, Zergliederungskunde det ungebohrnen Kindts mil Anmerk. 

 von. S. Th. Soemmering. Frankfort. 1792. 2 vols. 8vo. 



Also Theod. Hoogeveen, De fatus humani morbis. LB. 1784. 8vo. p. 28 sq. 



Fr. Aug. Walter, Annotat. academ. already quoted, p. 44 sq. 



And J. Dan Herholdt, De vita imprimis foetus humani. Havn. 1802. 8ro. 

 p. 61 sq. 



t Fourcroy, Annates de Chimie. T. rii. page 162 sq. 



