I'St* MifceUanea Curio fa. 



and languid, as to be fcarce, if at all percei- 

 vable, as has been experienced in the Dif- 

 fecHon of Puppies before Refpiration had. To 

 produce fuch a feeble Palpi- 

 Boyle of the cation, and creeping Motion, 

 m tM»$tl n ° greater force'feems to, be 

 eAs & Alimnti required, than may bedenvd 

 defeftu. from the Communication be- 



tween the Veflels of the Mo- 

 ther and -Foetus in the Placenta. I am not ig- 

 .norant, that divers very Learned Anatomifts 

 ( whom the Crowd have implicidy followed ) 

 have abfolutely rejected all Communication 

 between thefe Veflels. Bur, with fubmiilion 

 to Great Authorities, I think they have a&ed 

 arbitrarily, and without fufficient Warrant 

 from Reafbn or Experiment: For neither are 

 the Arguments which they bring againft it 

 conclufive, nor the Office which they aflign 

 to the Umbilical Veflels in lieu of it, proper, 

 or natural to thofe Veflels, or the reality of 

 the Fa£fc made out t>y any fubftantial Reafbns. 

 Thofe that reject, this Communication ufually 

 do it in favour of one or both of thefe Opini- 

 ons, that the Arteries of the Uterus do depo- 

 fire a Nutritive Juice, or a Juice impregnate 

 with Air in the Placenta, which is fuck'd in by 

 the Vmbilical Vein, and convey'd to the Fa> 

 tus, for the neceflary llfes of Nutrition and 

 Life. Now thole that patronize either of 

 thefe Opinions , lead Nature an unneceflary 

 Dance. For if the Maternal Blood does real- 

 ly contain any fuch Nutritious, or any fuch 

 neceflary Aerial Particles, why fhou'd they be 

 feparated and extra vafated, to be with diffi- 

 culty receiv'd into the Vmbilical Vein, and a- 



gain 



