Different Animals, €ec. 487 
tow and nerves, is the exclusive seat of sensa- 
tion, of the power of beginning voluntary motion 
and of the intéllectual powers in man (and other 
animals), whose nervous system is naturally 
formed and not affected by any gradual disease, 
A further proof of thisis derived from hence, that 
a suddeh and violent compression of the brain 
destroys all sensation, voluntary motion and 
intellec'ual powers, 
Upon this matter physiologists are generally 
agreed ; but they differ very considerably as to 
the part* of the brain, which is the immediate 
#6 Sedes animi auctore Cartesio est in hypophysi, 
Bontekoe; Lancisio 8 La Peyronie auctoribus in corpore 
calloso, Digby auctore in septo cerebri medio, Vieusseno 
in maximo medullz orbe, aliis in colliculis nervorum opti- 
corum, alits in nodo cerebri, Arantio in ventriculo 
cerebri tertio, Willisio in corporibus striatis, Drelincurtig 
in cerebello, Miegio in Spinz medulla.” 
* Verum tamen hypophysis ab Hallero, Virideto, & a 
me sine ingenii labe lxsa est inventa; Corpus callosum 
Heuermann, Zinn, Lorry & Laghi sine animi labe lzsum 
invenerunt, verum tamen hec experimenta, super bestiis 
capta, parum certi super labe ingenii produnt, la Peyronie | 
vero observationes in hominibus instituit, Septum cerebri 
medium non raro sine animi labe ex cerebri hydrope 
laborat—Corpora bigemina Viridet lesa invenit—Cere. 
bellum plures viderunt vitiatum—Corpora striata la 
Peyronie lesa vidit—Spine medullam ¢go sepius sine 
ingenii labe in ominibus lsum inveni,” Soemmerring de 
Corp. Hum. Fabrica T. IV. P- 100. 
Soemmerring seems inclined to consider the liquor of 
VOL. v. my 
