54 SENSORIAL ACTIONS. SECT. XI. r. 



in it. Thofe who have combined an extenfive clafs 

 of ideas by the contiguity of time or place, are men 

 learned in the hiftory of mankind, and of the fcien- 

 ces they have cultivated. Thofe who have connedl- 

 ed a great clafs of ideas of refemblances, pofTefs the 

 fource of the ornaments of poetry and oratory, and 

 of all rational analogy. While thofe who have con- 

 nected great chffes of ideas ofcaufation, are furnifh- 

 ed with the powers of producing effects. Thefe are 

 the men of a&ive wifdom. who lead armies to vic- 

 tory, and kingdoms to profperty ; or difcover and 

 improve the fciences, which meliorate and adorn 

 the condition of humanity. 



SECT. XI. 



ADDITIONAL OBSERVATIONS ON THE SENSORIAL 

 POWERS. 



I. Stimulation is of various kinds adapted to the organs 

 of fenfe, to the mufcles, to hollow membranes, and 

 glands. Some chjctts irritate our fenfes by repeated 

 impulfes. 11. i. Senfation and volition frequently 

 ajjeft the whole fenjorium. 2. Emotions, pajfions, 

 appetites. 3. Origin of .defire and aver/ton. Grite* 

 rion of voluntary actions, difference of brutes and men. 

 4. Senfib'dityandvoluntarity. III. Affociations form- 

 ed before nativity -, irritative motions miftakenfor af- 

 fociatcd ones. 



Irritation. 



I. THE various organs of fenfe require various 

 kinds of flimulation "to excite them into action ; 



the 



