"According to the doctrine now stated, the highest, or rather the only 

 proper object of physics, is to ascertain those established conjunctions of suc- 

 cessive events, which constitute the order of the universe; to record the 

 phenomena which it exhibits to our observations, or which it discloses to 

 our experiments; and to refer these phenomena to their general laws." 

 D. STEWART, Element* of the Philosophy of the Human Mind, vol. ii. chap. iv. 

 sect. 1. 



