THE PRINCIPLES OF SCIENCE: 



A TR 



1C 



SCIENT 



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 Trcmtlation and Reproduction is reserved.'] 



