[ 111 ] 
“ be feen greatly agitated in the fine Veflelsj and at 
“ the cut Edge of the Piece of Gill, may with great 
“ Pleafure be feen many Blood-globules, repelled 
“ from the cut Orifices of the Blood-vefTels, and 
‘‘ attraded by other adjoining Veffelsj alfo other 
“ Globules rolling round their Centre, and repelling 
each other ; whence (as he fays) it is plain, that 
Bodies, by brisk rubbing and twirling about, may 
“ acquire, in a watry Fluid, both attradive and re- 
“ pulfive Virtue or Eledricity/' 
From our laft Experiments we are led to think, that 
the Globules of the Blood, if by Fridion they acquire 
an eledrical atcradive Virtue, muft of neceflity repel 
one another 5 and that Eledricity is not fo properly 
called an attradive and repulfive Virtue, as a Virtue 
attradive of thofe Bodies that are not attradive them- 
felves, and repulfive of thofe that are ; and that this 
repulfive Force of the eledrical Blood-globules, excited 
by Fridion, as they flow in their Chanels (and particu- 
larly in the Imall ones, and perhaps more fo in thofe 
of the Lungs, where the refrigerating Power of the 
Air may aflilf, as Dr. Hales has obferved) ; this re- 
pulfive Force of the Blood globules, I fay, may be 
the great Caufe that hinders the Blood from coagu- 
lating as it circulates j may be the great Caufe of the 
conftant Perfpiration in an healthy State, and of the 
Increafe of it, € uteris paribus, in Proportion as the 
Velocity and Fridion of the Blood increafes. 
If thefe things are fo, the Neeeflfity of Exercife 
appears more plainly than ever, in order to keep the 
Body in an healthy State, as we may obferve here the 
very Steps that Nature makes ufe of to free herfelf 
from her Suppreffions, Granv, Wh'eJer. 
c:z'- 
III. 
