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

 the only proper object of physics, is to ascertain those established 

 conjunctions of successive events, which constitute the order of the 

 universe; to record the phenomena which it exhibits to our obser- 

 vations, or which it discloses to our experiments; and to refer these 

 phenomena to their general laws." D. STEWART, Elements of the 

 Philosophy of the Human Mind) vol. ii., chap. iv. sect. 1. 



