74 Hczmajlattcs. 
Tunnel poured warm Water into it ; then with 
a large Pair of Bellows fixed to the Wind- 
pipe, I alternately dilated the Lungs, to try 
if by that means, the Water would pafs into 
the pulmonary Vein : But I foon found myfelf 
difappointed, for the Water flowed fo freely, 
from the capillary Arteries thro* theTunicles 
of the Veficles, into the Veficles themfelves, 
and thence into the Bronchia ^ as to flow plen- 
tifully thro’ the Windpipe, when it hung 
down in a depending Pofturc. At firfl: I 
fufpcfted that the Force of the Water, which 
was four Feet high, in the Tube affixed to the 
Artery, might have burfi: the thin Blood- 
vefTels ; but I found it the fame in feveral Try- 
als, on the frcfli warm Lungs of Sheep, Oxen 
and Calves, even when the perpendicular 
Height of the Water of the Tube was lefs 
than a Foot ; and doubtlefs the Force with 
which the Blood is thrown into the Lungs, by 
the right Ventricle of the Heart, is greater 
than this. 
4. And that fo fmall a Force of Water 
could not burfi: the Blood-velTels, I was affur- 
ed by the following Experiment, viz, I dif- 
folved four Ounces of Nitre in a Pint of hot 
Water, into which Water there flowed from 
the 
