[ 5 1 ] 
CXIII. 
From what has been faid above, it feems reafonable 
to conclude, that if Contraction, in its fulleft Degree, 
was the natural State of Reft or Quiefcence in the Heart $ 
the Momentum of the Blood from the Contraction 
of the Auricles, could not be a fufficient Counter- 
poife. And fince fo many fruitlefs Attempts have 
been made to account for the "Diajiole of the Hearty 
from the Impetus of the Blood in the Veins, and 
from the Frefiure of the Atmofphere, give me 
Leave to propofe the following Queries . 
CXIV. 
ift. May not the Heart be a compound Mufcle 5 
that is, may it not have its Antagonift within itfelf? 
Or, in other Words, are not fome of its Fibres fo 
ranged, that whilft one Set of them is contracted 
and fhorteiVd, others may be ftretched out 5 analo- 
gous to the Action of the intercoftal Mufcles, or 
any other Mufcles with their Antagonifts? 
cxv. 
2 dly. Is the nervous. <^yEther tranfmitted from 
the Brain to the Heart in a pulfatory Manner, at 
equal Diftances of Time 5 or may it be fuppofed to 
move uniformly through the Nerves, and fome In- 
terruption is given to its Influx into the mufcular 
Fibres, when the Heart is in its Syfiole ? 
G 2 
CXVI. 
