THE PRINCIPLES OF SCIENCE : 



A TREATISE ON LOGIC 



A\D 



SCIENTIFIC .METHOD. 



BY 



W. STANLEY JEVONS, 



LL.D. (kDINE.), M. a. (LOND.), F.R.S. 



ITonbou : 

 MACMILLAN AND CO. 



1883. 



7'he Right of Tuiiulalion and re product ion it lieurvtd. 



