( 57 ?) 
Cartes would have it) but the moift fleams and exfpirations of 
the Heart, 
As for Refpiration, he thinks it a vain opinion, that thereby zhQ 
Heat of the Bloud is tempered and allay’d 5 but affiims, that it is 
therefore neceffary, becaufe that the Bloud, which out of the 
right. Ventricle of the Heart is propelled into the Lungs, in fuclt 
Animals, as are furnifht with them, cannot pafs into the left , mv 
lefs the Air, breathed in, do fvvell and diftend the fin all branches 
©f the Wind-pipe 5 it being from thence, that the ramifications? 
of the Arterial Vein , through which the bloud fliuft pafs , are 
comprefi U and the bloud, therein inclofed, is protruded into the 
branches of the venal Artery 5 For the proof of which, he al- 
ledges divers Obfervations : Adding withall, that, fince Animals* 
whilft they are in the Womb, refpire not, there being peculiar 
duclus's^by which the bloud pafteth into the Aorta, without puf- 
fing through the Lungs, as it aiwayes doth in Animals dcftitute of 
Lungs -, he doubts not, but that with art and care thofe channels 1 
may be preferved un-abolifht, and made to grow and to be per* 
fedfed with the other parts of the Animal, fo that grovvn men 
may bebrought to live ihelifeof Amphibious Creatures. Bor 
doth he think this very difficult, in regard, that if their mouths 
and nofes were from their very infancy often ft opt every day, and 
their breath fo long intercepted, whilft the bloud pafteth through 
thofe dudfus’s into the left ventricle of the. Heart and the great' 
Artery, the faid paftages would never be dryed up f To confirm- 
the poffibility whereof, he alledges Examples of' Divers, who 
from their childhood being given to fwimming and diving, and' 
fo to the holding of their breath, did thereby fo*preferve thofe * 
channels from being dried up, that upon occafion they could 
flay a great while under water, as Amphibians vfe todo. 
L'fE S E'S S ATS. PH YS I gp M S M Sieur DM ' L A. Y~y 
NAYj Liv, premier, 
T^Hjs Learned Man having propofed to himfeff to go tJirowgE 
.y the whole Body of Natural Phi l of ophy , by the w 7 ay of J£j?aysy 
divides that Syfleme into three Parts, 5 . whereof 
l..he Tirf being General, is to treat of what is, common ’£0' .all 
Jodies,,, 
