THE PRINCIPLES OF SCIENCE: 



A 7 T ^/^rrs3sa& x/t ic 



METHOD. 



BY 



W. STANLEY JEVONS, M.A., F.R.S., 



FELLOW OF UNIVERSITY COLLEGE, LONDON ; 

 PROFESSOR OF LOGIC AND POLITICAL ECONOMY IN THE OWENS COLLEGE, MANCHESTER. 



VOL. I. 



MACMILLAN AND CO. 



1874 



[ The Right of Translation and Repruduction is reserved.} 



