SECT. VIII. i. SENSITIVE MOTIONS. 4$ 



my retina, and induces by affociation the aftion of 

 certain locomotive mufcles ; though neither itfelf 

 nor the actions of thole mufcles engage my atten* 

 tion. 



Thus whilft we are converting on this fubjeclr, 

 the tone, note, and articulation of every indivi- 

 dual word forms its correfpondent irritative idea on 

 the organ of hearing ; but we only attend to the 

 aflfociated ideas, that are attached by habit to thefe 

 irritative ones, and are fucceeded by fenfation ; thus 

 when we read the words " PRINTING-PRESS" we do 

 not attend to the fiiape, fize, or exiftence of the let- 

 ters which compofe thefe words, though each of 

 them excites a correfpondent irritative motion of 

 our organ of viiion, but they introduce by affocia- 

 tion our idea of the moil ufeful of modern inven- 

 tions ; the capacious refervoir of human knowledge, 

 whofe branching ftreams diffufe fciences, arcs, and 

 morality, through all nations and all ages. 



SECT. VIJI. 



OF SENSITIVE MOTIONS. 



I. i. Senjltwe. .mufcular motions were originally excited 

 Into aclion by irritation. 2. And fenfttive fenfual 

 motions y ideas of 'imagination , dreams* II. i. 6V/z- 

 Jttive mufcular motions are occasionally obedient to vo- 

 lition. 2. And fenjitive fenfual motions. III. i. 

 Other mufcular motions are officiated with the fenji- 

 five ones. 2. And other fenfual motions. 



I. i. MANY of the motions of our mufcles, 

 that are excited into action by irritation, are at 



K the 



