LECTURE II. gg. 



believe, that neither such perception nor 

 intelligence is requisite for the mere func- 

 tions of life, for these appear to be carried 

 on as effectually in animals that have no 

 brains, nay, in those which seem destitute 

 of any nervous system, as in those which 

 possess such organs. Indeed, many of the 

 most vivacious and irritable animals have 

 the least nervous system. The nerves in 

 the lower order of animals, that have no 

 common sensorium, may contribute to 

 produce effects, which, in tracing the as- 

 cending series, I have endeavoured to 

 express by the words concurrence of im- 

 pressions and actions ; because intimations 

 of impressions and actions occurring in 

 one part may be communicated to others 

 by these inter-nunciate chords, as Mr. 

 Hunter called them, in cases where we 

 are not warranted in supposing there is 

 any sensation such as I have defined. 



Assuredly, motion does not necessarily 

 imply sensation ; it takes place where no 

 one ever yet imagined there could be sen- 

 sation. If I put on the table a bason con- 



F 3 



