fm) 
ilie Guts, becaufe they want breafts, and their yolk is flint tip 
in the belly. 
The Vmbilical Arteries , belonging Jo the Placenta^ and com- 
monly faid to be derived from the Crurals , are by him affirmed 
to proceed from the end of the Aorta. They are heredefcri- 
bed,and their feveral portions distributed for the Chorion and 
Amnion. Then an account is given of the Hepatic^ Vein , cor- 
refponding to the Arteries. It is in Viviparous Animals infer* 
ted into the Vena porta, palling again with the remaining bloud 
thorow the CanallsVeno (us into the Cava 3 without percolation 
made in the Liver. In Birds it enters not into the Liver, but 
paffes over its convexity into the Cava. A description alfo is 
made of the Vrachus ^ found in all Viviparous Creatures, though 
by many Writers denied to be in Man, who notwithftanding 
hath need, as well as other fuch Animals, fomewhere to lodge 
his Urine. The Oviparous want this Umbilical funiculus, but 
yet are furnifhed with fit fanguineous veflels, which here alfo 
are explained ; efpecially the DuBus lnte(linaUs , faid to be 
omitted by Dr. Harv.ey , and to have been known to the Au- 
thor long before Mr. Stem claimed the difcovery of it » for 
which he appeals to the teftimony of Mr. Boyle , and three 
worthy Phyficians,^//^, Millington , and Lower • as alfo to that 
of two ingenious Frenchmen , Guifon , and fiard^t o whom our 
Author affirms to have (hewed Anno when they were 
going over into Holland , not only this DuBus , but alfo the Du * 
Bus Salivates, and the PaJJages of the Nojlrils, published after- 
wards by the faid Stem. 
The ufe of this DuBus Intejlinalis is efteemed to be, the con- 
veighing of the Talk, into the Guts for a fecond co&ion, there 
made by the fancreatich^ Juyce, acknowledged to be excel- 
lently handled by the Learned Sylvius , and his ingenious 
Schollar, De Graeff , from the former of whom our Author yet 
diffents, about the mixture of the Gall with the faid juyce in 
the Heart, refuting it by feveral Experiments. 
The fifth , explains the Communion of Veflels in Embryo’s: 
In whom, he faith, three Anaftomofes are ufually ot>ferved 9 
which, as foon as the Fatm is born, are clofed.They are called, 
"■ Foramen Ovale, C analis Arteriofus , and Venofus . The two former 
to 
