22 An Argument againit 
fome abfurd theories of their Adverfaries were over- 
thrown; they have accumulated their ftrength 
againft defencelefs points; and have thought it a 
complete victory, to triumph, like Caligula, over 
tubbifh and fand. . 
Great danger atiends every ftep beyond direé 
inference, in reafoning concerning the facts of 
Neurology. Many of them tend to perplex, and 
many feem to contradict each other. But on the 
prefent queftion, though the facls are uncommon, 
they are complete; they cannot, therefore, be 
reckoned anomalous. And their authenticity would, 
not be queftioned even by a general reader, ac- 
guainted with the great names only of modern 
Philofophy, though they had remained unnoticed 
by Morcaenr and Hatrer.* 
The Materialifts deny the neceffity of any thing 
more than the vifible ftru@ture of the brain, to 
produce the act of thinking, in confequence of 
perception; but the contrary feems to be probable 
from thefe facts, which fhew that, at different 
times, every part of that ftructure has been deeply 
injured, or totally deftroyed, without impeding or 
changing any part of the procefs of thought. It 
js otherwife in the organs of Senfe. When the parts 
of the Brain which, in common language, give 
origin to the Nerves eulevelyins thofe organs, are 
injured, 
* | have omitted a great number of fatts, ftrongly in my 
favour, becaufe the Authorities were not perfettly unex- 
ceptionable, 
