CLASS II. 1. I. a OF SENSATION. 65 



ORDO II. 



Decreased Sensation. 



GENUS I. 



Of the General System. 

 SPECIES. 



1. Stultitia insensibilis. Folly from insensibility. The plea- 

 sure or pain generated in the system is not sufficient to promote 

 the usual activity either of the sensorial or muscular fibres. 



2. Tcedium vittf. Ennui, Irksomeness of life. The pain of 

 laziness has been thought by some philosophers to be that prin- 

 ciple of action, which has excited all our industry, and distin- 

 guished mankind from the brutes of the field. It is certain that, 

 where the ennui exists, it is relieved by the exertions of our minds 

 or bodies, as all other painful sensations are relieved; but it de- 

 pends much upon our early habits, whether we become patient 

 of laziness, or inclined to activity, during the remainder of our 

 lives, as otlijer animals do not appear to be affected with this 

 malady; which is perhaps less owing to deficiency of the plea- 

 surable sensation, than to the superabundancy of voluntary power 

 which occasions pain in the muscles by its accumulation; as ap- 

 pears from the perpetual motions of a squirrel confined in a cage. 



3. Paresis sensitiva. Weakness of the whole system from in- 

 sensibility. 



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