COLLATERAL READINGS SUGGESTED 

 IX CONNECTION WITH ESSAY III. 



Spencer's First Principles, and Illntitrations of Universal Pro- 

 gress; Haeckel's History of Creation; Kant's Critique of Pure 

 Reason; Laplace's 3/ecamgue Celeste; Graham's Creed 0/ Sczence; 

 Clodd's Story of Creation, and Childhood of the World; Picton's 

 Mystery of Matter; Mivart's Contemporary Evolution; Winch ell's 

 World Life; Gladstone's Juvenilis Mundi ; Slaughter's Modern 

 Genesis; 'NevfcomV a Astronomy ; Stewart and Tait's Unseen Uni- 

 verse; Jevons' Principles of Scienre ; T^dall's FrrKpnenis of Phys- 

 ical Science; Proctor's Other Worlds than Ours (chapter IX). 



