tion of these bodies being of the nature of brain at all, to 

 be altogether repugnant to analogy, and equally unsup- 

 ported by experiment or observation. As to the first, and 

 most popular perhaps, of these three views, I confess for 

 my own part, that I am unable to find any support for it 

 be the ganglia what they may, I see no reason for believ- 

 ing the extreme one of the series to have any privilege or 

 prerogative whatever, over the others. As to the second, 

 which holds all the ganglia to be so mam; brains, an argu- 

 ment would, I think, be well entitled to a hearing, which, 

 without attempting any thing more precise, should simply 

 trace the legitimate and necessary consequence of suppos- 

 ing a conclave or council of brains in one being, and 

 signalize the prodigious inconvenience of many brains to 

 a single possessor. Position then goes for nothing, and 

 structure being interrogated, the ganglia, in this respect, 

 are all so much alike, that no reason appears to remain 

 for believing the head ganglion, in insects, to be endowed 

 with superior functions to the rest, and to be the brain 

 par excellence ; nor, so far as I know, is there any experi- 

 ment or observation tending to such a conclusion, except 

 Sir Charles Bell's, which, I am satisfied is incorrect. On 

 observing a divided worm, I found that instead of the 

 decollated head and shoulders moving away, and leaving 

 the tail to the fate of dependents in general, both halves 

 began to move in the same progressive manner, and 

 each soon found its way to the borders of the plate. 

 Perhaps, for a few seconds, the headless portion might, 

 of the two, seem least lively, but as soon as it had 

 made up it's mind, it moved off, much in the fashion that 

 the entire worm is wont to do, or the piece to which the 

 head belonged, did. Moreover, if worms be cut into 

 several pieces, the motion is the very same sort of motion 

 in all, with that of the obtruncated head and its piece of 

 body, and the death, or cessation of motion in the different 

 pieces, appears to depend generally upon their masses. 



