C i2t ] 
to explain any thing relating to fo obfcure a part of 
the animal oeconomy, as the nerves, and their facul- 
ties. But as this dodrine, weighed againd what has 
been faid againd it, feems to me to have a confidera- 
ble preponderance of evidence and probability in its 
favor, I fhall now date the dronged objections which 
have been oppoled to it, and endeavour to anfwer 
them. 
i. The chief objedion which has been made to 
this dodrine arifes from obferving, that the fpinal 
nerves, have each one ganglion : and that one or two 
have been obferved fometimes upon the fubdivifions 
of the fifth pair of nerves. 
With refped to the fird, it is in the highed degree 
probable that the ganglion obferved upon each of 
the fpinal nerves refpeds folely the intercodals (fee 
Window’s; defcription of that nerve, Exp. An at. p. 
462.) and is there feated to fet apart for the ufes of 
the great fympathetic nerves the farculi , which are- 
from each of thefe ganglions detached to that great 
pair of nerves. 1 . Becaufe the fpinal nerves have 
no other ganglion in any part of their courfe. 
2. When nervous twigs are fent ofi' from the fpinal 
nerves, to join others befides the intercojlals, they have 
no ganglions ; as the nervi accejjorii fent from the 
upper fpinal nerves to join the eighth pair: and the 
fird of the fpinal nerves, and the lad of the nervi fa- 
cri are reprefented by Vieuflens * as being without 
ganglions , and fending no contribution to the inter- 
codals. 
Were the ganglions only little knots indifcriminate- 
ly fuitable for nerves, which carry the commands of 
* Neurography 
Vol.LVII.- R the 
