the Doftrine of Materialifn. 27 
Left this narration fhould ftartle you, as La 
Peyronie, in the éffay referred to, had a favourite 
fpot which he withed to render the feat of the 
Soul, namely, the Corpus Callofum, fuffer me to 
guard it by a fimilar quotation from the cautious 
Morcacni: “ et fi parietum lateralium ventricu- 
“ Jorum craffitudo vi aque fuerat in quinquenni 
“ illo Tulpii, non modo in trienni Hildani, aut ' 
‘ bienni Vefalii, fuperné, & ad latera ufque 
adeo extenuata, ut prima infpectione nulla effe 
videretur, cum inftar alicujus craffioris membrane 
adherefccret undique arcuate diffolutorum offium cir- 
cumferentie ; nihil dubii eft quin, &c.* 
After reading thefe. hiftories,. you would be 
greatly furprized to find, in Mr. Pott’s treatife on 
Injuries of the Head, that death has fo often fol- 
lowed flight effufions and extravafations under the 
dura mater, preceded by comatofe fymptoms, and 
frequently by total infenfibility. The contraft 
has often aftonifhed me, but does not alter 
the nature of the facts; and only ferves to 
fhew the danger of analogical reafoning in Neuro- 
logy, or perhaps, as a French wit has exprefled 
ca 
ce 
e 
‘ 
ee 
- 
‘ 
De it, 
* Epift, Med, Anat, XII. Art. 8.—Confult fome pre- 
ceding paflages, where he afcribes the apparent defe& of 
brain in fome foetufes to a wafting caufed by the continued 
prefflure of effufed water, 
