120 Of viewing the Current 
on the contrary, return back the Blood from 
the Extremities to the Heart, whofe Dia¬ 
meters enlarge as the Tide rolls along, and 
whofe fmall Branches are continually unit¬ 
ing and making larger Veffels, till at lafl all 
their Streams fall into one ; here, at every 
Conjunction of two Branches, their Cur¬ 
rents rufh againfl each other with Violence : 
by which Concuffion unnatural Cohefions 
are broken or prevented , and of this the 
Microfcope can afford us ocular Demonfir a- 
tion. Vide Fig. IV. 
CHAP. X. 
/ , 1 
Of viewing the Current and the Circu¬ 
lation of the Blood. 
B Y the Current of the Bloody I mean its 
fir earning or pafiing on either from or 
towards the Hearty through any VeJJel, whe¬ 
ther it be a Vein or Artery . 
By the Circulation I would be underftood 
to intend, the Courfe or Current of it, from 
the Heart , along the Arteries , to the Extre¬ 
mities of the Body: together with its Return 
by the Veins from the Extremities back again 
towards the Heart . 
Both thefe the Microfcope can bring to 
View y but the latter is fomewhat more dif¬ 
ficult 
) 
I 
