THE 



ANCIENT LIFE-HISTORY 



OF 



THE EARTH 



A COMPREHENSIVE OUTLINE OF THE PRINCIPLES 



AND LEADING FACTS OF PAL^ON- 



TOLOGICAL SCIENCE 



BY 



II. ALLEYNE ^ICHOLSON 



M.D., D.Sc., M.A., PH.D. (GoTT.), F.R.S.E., F.L.S. 



PROFESSOR OF NATURAL HISTORY IN THE 

 UNIVERSITY OF ST ANDREWS 



NEW YORK: 

 D. APPLETON AND COMPANY, 



72 FIFTH AVENUE. 

 1895. 



