( 2$ 0 6 ) 
Veins which referable Arteries $ for the Spleen can have 
no blood conveyed into ir, but what is brought tq it 
from the Heart fay the Arteries. 
Now this Blood which is carryed through the Arteries 
that are joyneci to the Veins, and make the fame Sangui- 
nary VefJeis, being tranfported into the great and large 
Veins of the Spleen, cannot, in rny opinion, be carryed 
back again into the Heart with fuchaforce, becaufe the 
Blood that ifiues out of the Spleen, is not carryed firft to 
the Heart, but immediately to the Liver, 
This being granted, I conceive that there is a necefil- 
ty of a ad motion, to protrude the Blood out of the 
Spleen into the Liver, confiding herein, that as the Spleen 
in Sheep is in great meafure joyned by a Membrane to the 
Diaphragm and partly to theStomach,as often astheBreath 
is drawn in, the Diaphragm is extended, whereby the 
Spleen is comprefied, and the Blood thereby fo forced into 
the great Vefiels, that it carries part of it to the Liver, and 
when the Breath exhales, then thofe Fibrous parts are 
freed from that Preffure which they underwent by the 
the drawing in thereof, and fo by the extenfion of the 
Laid Fibrous parts, they more eafily imbibe the Blood out 
of the Arteries. 
Now if the Spleen had not fuch a continual motion, 
the Blood contain’d in it would be very little agitated, 
becaufe (as I fuppofe) that the Blood in the Veins of the 
Spleen, is at ieaft twenty times more than that which is 
contained in the Arteries. 
Which motion fuffioiently prevents the Blood from 
ftagnating in the Veins, though the courfe of it be fome* 
what flow, for the Globules of the Blood, as far as I can 
difeover, do always coagulate in order to effeft a Stagna* 
tion of the Blood- 
They alfo fay, that the Spleen does purify the Blood, 
that it may caufe no obftruttion in the Liver, but thofe 
Opinions feem ftrange to me, and I would ask the Peo- 
ple 
