Clafs II. a. i. i. OF SENSATION. 265 



ORDO II. 



Decreafed Senfation. 



GENUS I. 



Of the General Syjlem. 



SPECIES. 



1. Stultitia injenftbilis. Folly from infenfibility. The pleaf- 

 ure or pain generated in the fyftem is not fufficient to promote 

 the ufual activity either of the fenfual or mufcular fibres. 



2. Txdium vita. Ennui. Irkfomenefs of life. The pain of 

 lazinefs has been thought by fome philofophers to be that prin- 

 ciple of action, which has excited all our induftry, and diftin- 

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

 where the ennui exifts, it is relieved by the exertions of our 

 minds or bodies, as all other painful fenfations are relieved ; 

 but it depends much upon our early habits, whether we become 

 patient of lazinefs, or inclined to activity, during the remainder 

 of our lives, as other animals do not appear to be affected with this 

 malady ; which is perhaps lefs owing to deficiency of the pleaf- 

 urable fenfation, than to the fuperabundancy of voluntary pow- 

 er which occafions pain in the mufcles by its accumulation ; as 

 appears from the perpetual motions of a fquirrel confined in a 

 cage. 



3. Parefis fenfttiva. Weaknefs of the whole fyftem from in- 

 fenfibility. 



VOL. II. - L i, ORDO 



