C 38 ) 
runs through the Body of the Nerves. He looks upon 
the account fVillis and Fieuffenitu gives of the Nervous 
Fibrils twining about the Optick Nerv e erroneous. He 
Remarks, that the original of the third pair of Nerves, no 
way countenances Willis's Hypothefis. He confirms the 
account of Fepngius, concerning the intercoftal Nerve. 
The Auditory Nerves are obferved to have two ori- 
ginals on each fide, different one from another the 
loft Branch arifing from the tranfverle Procefi, in the 
fouth Ventricle before taken notice of 
The fprinal or acceflory Nerve hath its original 
more remote than FieuJJemus hath obferved. 
He takes notice there is no tenth Foramen at all, nor 
need be, as Fieujfemus would have it. Here is given 
a particular delcription of the ftrud:ure of a Nerve, 
as alfo an account of the Nature of the animal Fluid, 
how it difiFers from the parts containing it. 
Chap. 17. In this laft Chapter, after having (hewn 
the diCtind: Offices of Nerves, with relation to tliC dif- 
ferent Fundions of Senfe and Motion, fome ferving 
only for one, fome for another , others for both, 
alfo the Nature it felf of thofe two Fundions: He 
enters upon an enquiry into the power of the fenfi- 
tive faculty, prefidmg over the Nervous Syfteme, and 
of the manner of its executing the fame, in doing 
whereof, he particularly examines the celebrated Hypo- 
thefis of Dr. Willis, hitherto fo greatly countenanced 
within a manner, the univerfal fufTrage of Modern Au- 
thors, in relation to the voluntary and involuntary ads 
of the Soul, therein indeavouring to reftore the Brain 
to its ancient jurifdiftion, over that Family of Nerves, 
by the faid Author, made fubjed:. to the certUUum only, 
dempnftrating the idenfity of thofe adions, in Brutes 
which are reckoned the efFedis of nieei: inftin,(5", with 
diofe in reafonable Creatures, by the fame Author, cal^ 
led 
