COLLATERAL READINGS SUGGESTED 

 IN CONXECTIOX WITH ESSAY IV. 



Haeckel's History of Creation ; Lyell's Geology ; Le Conte's Ge- 

 ology ; Dana's Geology ; Winchell's World Life; Clodd's Story of 

 Creation; Ramsay's Earth Sculpture; Heilprin's Geological Ev- 

 idences of Evolution. 



