THE 



CORRELATION AND CONSERVATION 



FORCES: 



PEOF. GKQYE, PEOF. HELMHOLTZ, DE. MAYEK, 



DE. FAKADAY, PEOF. LIEBIG AND 



DE. CAKPENTEK. 



INTRODUCTION AM) BEIEP BIOGEAPHICAL NOTICES OF THE 

 CHIEF PEOMOTEE8 OF THE NEW VIEWS. 



BY 



EDWARD L. YOUMANS, M. D. 



The highest law in physical science which our faculties permit us to perceive the 

 Conservation of Force.&quot; DE. FAEADAY. 



NEW YOEK: 

 D. APPLETON AND COMPANY, 



90, 92 & 94 GRAND STREET. 



1868. 



