Hcemajlatics. 105 
which, as it promotes Attenuation, does alfo 
at the fame -time increafe Heat. 
36. As the natural Heat of the Blood is 
not far from the coaguladng Degree, to which 
and a much greater Degree, it does we fee 
foon rife, if not frequently refrigerated, by 
the Infpirarion of frefli Air : So this makes 
it very probable that one confiderable U(e of 
the Lungs, is to refrigerate the Blood ; Atte- 
nuation and feparating the Blood Globules is 
alfo doubtlefs another great ufe of them: For 
tho’the Blood Globules are feparated and pafi 
fingle, from the innumerable extream capilla- 
ry Arteries of the reft of the Body, to the 
correfponding Veins, yet the venal Blood is 
not florid, which Floridnefs may in a good 
Meafure be owing to the ftrong Agitation, 
Fridion and Comminution which it under- 
goes in pafling, with much greater Velocity 
thro* the Lungs than other parts of the Bo- 
dy ; in like manner as in Exper, XIII. Numb. 
10. the Blood which was much agitated in 
a clofed Glafs Veflel, was obferved to be very 
florid, not only on its Surface but thro’ its 
whole Subftance as arterial Blood is. ’Tis 
probable alfo that the Blood may in the Lungs 
receive fome other important Influences from 
the 
