C 36 ] 
“ Mufcles. And this Power they have by the Me.- 
ec diation of the Nerves, which are folid uniform 
tc Threads, arising from that Part of the Brain to 
“ which the Soul is prefent, and terminating in 
te the Mufcles : For, a vibrating Motion, rais’d, by 
“ the Power of the Will, in the z^JEther contain’d 
44 in that End of a Nerve which terminates in the 
<c Senforium , or Place in the Brain to which the Soul 
is prefent, will, in an Inftant, be propagated to 
“ the Mufcles fupply’d by that Nerve, and raile a like 
“ vibrating Motion in all its Fibres, from the very 
“ great Communication there is between the Nerves 
“ and the flelhy Fibres of the Mufcles.” 
XLVI. 
At to what Profeffor Monro fays of the compo- 
nent Parts of the nervous Fluid, it would be fit for 
the Purpofes he afiigns, by a good Analogy drawn 
from Plants, viz. to nourifh and fupply wafted Par- 
ticles, as well as to propagate mufcular Motion; pro- 
vided it was of a Confidence fubtile enough to pafs 
thro’ thofe extremely minute Tubes, and that the 
Mafs of Blood was not the only Pabulum defign’d 
by the Creator for affording Nutrition. There is 
great Need, in whatever Fluid the Nerves contain, 
of a Capacity of a&ing with the greateft Celerity 
imaginable ; and one would think a Mixture of a 
faline and oleaginous Matter not the moft fit for fuch 
active Performances as the Will fometimes deter- 
mines, and fome of which are as fwift as mere Ex- 
plofions. However this be, our ingenious Author 
1 has 
