4l8 ON SENSORIAL VISION. 



out of the question to pretend to raise any theory state 

 any doctrine or say anything in the least degree satis- 

 factory, or on which any two opinions would agree, 

 about it. Still it strikes me as not by any means devoid 

 of interest, to contemplate cases where, in a matter so 

 entirely abstract, so completely devoid of any moral or 

 emotional bearing as the production of a geometrical 

 figure, we, as it were, seize upon that principle in the 

 very act, and in the performance of its office. 



(21.) I will not, however, pursue this further, lest I get 

 bewildered myself and bewilder all who listen to me, and 

 it only remains for me to thank you for your patience 

 in listening to me so far, and to apologize once more 

 for dwelling upon my personal impressions. There is 

 one thing more I would add which is to congratulate 

 this town of Leeds on the existence within it of a society 

 of such a nature as that here assembled, and number- 

 ing among its members so many gentlemen of large and 

 liberal views, of extensive information and high acquire- 

 ments, both scientific and hterary equally the orna- 

 ments of this their city, and of our common country. 



