(57^) 
Cartes would have it) btit the moift fieains and exfpirations of 
the Heart. 
As for Refpiratm^ he thinks it a vain opinion, that^^^^r^^;' the 
Heat of the Bloud is tempered and allay'd ^ but sffirmsj that it is 
therefore neceflary , becaufe that the Bloud , which out of the 
r/f;&/^ Ventricle of the Heart is propelled into the Lungs, in fuch 
Animals, as are fuiniflit with them^ cannot pafs into the lefi^, un- 
lefsthe Air^ breathedin^ do fwell anddiftend the Irnall branches 
©f the Wind- pipe. V it being from thence, that the ramifications 
of the Arterial Vein^ through which the bloud muft pafs, are 
comprefi'd, and thebloud, 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 5 
whilft they arc in the Womby refpire not, there being peculiar 
du^us"s:^y which the bloud pafleth into the without piaf- 
fing through the Eungs^as it alwayes doth in Animals deftitute of 
Lungs 5 he doubts not^but that with art and carethofe channels 
maybe preferved un-aboli(ht, and made to grow and tobeper- 
fedledwith the other parts of the Animal, fo that grown men ^ 
may be brought to live the life of kmphibious Creatures. Nor 
doth he think this very difficult, inregardj that if their mouths 
and nofes were from their very infancy often ftopt every day^ and 
their breath fo long intercepted, whilft'the blood palTeth through 
thofe duftus's into the left ventricle of the Heart and the great 
Artery, the faidpaffages would never be dryed up : To confirm^ 
the poflibility whereof^ he alledges Examples of 2) /Vw, who 
from their childhood being given to fwimming and diving, and . 
fo to the holding of their breath, did thereby fo preferve thore> 
channels from being dried up, that upon occafion they could 
flay a great while under water, z% AmfhibiumVLk to do, 
LB S ESS A YS PUTS I ^ E S d^: Sieur DE LA V- 
MATy Liv. fremkr. 
THiS Learned Man having propofed to himfelf to go through - 
the whole Body of Natural Philojophy, by the way of Efajs^- 
divides that Sjjieme into threePar£s>5 whereof 
The being Cmeral^ i* so treat of what is conrmon to 
