[ 32 1 
a proper Cord or String; the ele&ric Matter, which 
is excited by Fri&ion between the Hand and Tube, 
would ever be ready to exert its attra&ive Influence 
on Leaf-Gold, and fuch-like Things, when placed 
within a due Diftance of the End of the String; 
and perhaps this may be very fimilar to the Motion 
and A&ion of the nervous o 'Ether. 
LXIII. 
Thus much being premifed, and it being taken for 
granted, that we have an ethereal Medium in the 
Brain, Spinal Marrow, and all th zCapillamenta of 
the Nerves, ever ready to be convey'd into the muf- 
cular Fibres, by the Power of the Will, and which Me- 
dium confiding of the moft refined Matter in Nature ; 
it follows, that the Motion of this nervous <^/Ether 
may be as quick as Lightning, and alfo its attractive 
Power muft be exceeding ftrong, by virtue of its 
vaft Degree of Subtilty ; as is evident from what 
Sir Ifaac Newton * has calculated concerning the 
Rays of Light. 
LXXIV. 
From thefe Obfervations therefore, and from what 
has been faid above concerning the Cohefion and 
Elafticity of the animal Fibres, I think we have great 
Reafon to conclude, that mufcular Motion does pro- 
ceed from the Influence which the nervous o dEther 
has 
* Dpt. 23, 24. 
