0,11 

 307 



*, 1 



THE PRINCIPLES 



SO A 



BIOLOGY y 



BY 



HERBERT SPENCER, 



4.0THOR OF U TI1E PRINCIPLES OF PSYCHOLOGY," "ILLUSTRATIONS OF PROGRESS,* 



kt essays: moral, political, and esthetic," "first PRINCIPLES." 

 "social statics" "education," etc. 



VOL. I. 



NEW YORE: 

 D. APPLETON AND COMPANY, 



1, 3, axd 5 BOND STEEET. 

 18 81. 



