Ikal Veflels are difperfed through the ^lacfenta, Sind that 
the Capillary Veins of the Placenta are anaftomofed 
with the Capillary Arteries of the Matrix, from whom 
they receive the Blood that is carried to the Child for 
its Nourifliment, and the remainder is carried back by 
the Umbilical Arteries which are anaftomofed with the 
Veins of the Matrix ; Co that the Circulation is made 
from, the Mother to the Child, and from the Child to 
the Mother, by means of the Placenta and Umbilical 
Veflek 
Which of thefe Opinions are the mod probable, de- 
pends upon the Anatomy of the Parts ; but any of them 
will ferve my turn, Hz, to prove there is a continued 
Circulation from the Mother to the Child, and from 
the Child to the Mother : And to confirm it, I lhall 
produce Two or Three Experiments which I had occa- 
fion to fee performed. The firft was on a Fastus, by 
Monfieur Ju Ferny ^ where by blowing into the Umbi- 
lical Vein, and tying the Arteries j a little after the 
Umbilical Arteries were didended. The kconi Expe- 
riment performed alfo by Mr. du Fernjy was upon the 
Difleftion of the Uterus of a Woman newly brought to 
Bed, by blowing into the Hypogaftrick Artery, the 
whole Veflels were filled, and the Matrix blown up ; 
and for a farther Tryal he made an infpeftion, by 
which the Liquor came forth at the Orifices of the lit- 
tle Glands, which are difperfed through the Matrix. 
This Experiment cannot be performed but only in 
fuch cafes. The third Experiment I fee performed by 
Monfieur Bidloo^ Prof^flbr of Anatomy at Ley den on a 
Faetus, whereby an Injedion of Wax into the Umbili- 
cal Vein, the whole VefTels were filled both Veins and 
Arteries, at which he was a little furprized, being con- 
trary to his Dodlrine. I could inftance feveral other 
Experiments, but this is fufficient to prove there is 
