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formed folely for the ufe of that mufcle, and for that 
purpofe. 
That the determinations of the will are, as it were, 
intercepted, and prevented from reaching certain 
parts of the body, by the means of Ganglions, may 
be farther inferred by coniidering, that all nerves, 
which have a ready communication with the foul, 
either by affedting it with perceptions, or conveying 
its commands, have no Ganglions: Thefe are never 
found upon the olfadtory, optic, or auditory nerves, 
any more than upon the nerves and inftruments in 
voluntary motion. For we may well imagine the 
fame mechanifm, which prevents the will from ex- 
tending its controul to fome mufcles, placed upon a 
fenfory nerve, would have equally hindered the con- 
veyance of any fenfible impreliion to the mind. 
The left nerve of the eighth pair, didributed to the 
domach, and probably the caufe of the didindt and 
exquifite fenfation of that organ, and perhaps alfo 
principally concerned in tranfmitting the fenfe of 
hunger to the mind, may therefore be reckoned a fen- 
fory nerve. It is certain alfo, that Haller (/) and mod 
modern anatomids do not allow any Ganglion to this 
nerve, though Window does, and Vieudens delineates 
one not far from the great Ganglion of the intercof- 
tal nerve as proper to the eight pair. 
If mufcles fubjedt to the will might have been to- 
tally fuppiied with nerves, which have Ganglions ; the 
diaphragm had probably been entirely furnilhed from 
the intercodals, as mod of the parts in the thorax 
above it and in the abdomen below it are. But as 
the motions of this mufcular membrane were to be 
(/') A. Haller, Primae Lin. Phyfiolog. N°. 377. 
controulable 
