COLLATERAL READINGS SUGGESTED: 



Spencer's Principles of Biology and Factors of Organic Evolution ; 

 Darwin's Origin of Species ; Wallace's Contributions to the Theory of 

 Natural Selection, Island Life, Tropical Nature, and Darwinism ; Wil- 

 son's Facts and Fictions of Zoology ; Huxley's Crayfish : an Introduc- 

 tion to the Study of Zoology, Evolution in Biology, and Man's Place 

 in Nature; Karl Semper's Animal Life as affected by the Natural 

 Conditions of Existence ; Carpenter's Nature and Man, and Biograph- 

 ical Essays; Romanes's Animal Intelligence; Haeckel's Pedigree of 

 Man and other essays ; Lotze's Microcosmus ; Cope's Origin of the 

 Fittest ; Whewell's History of the Inductive Sciences ; McRae's Fa- 

 thers of Biology ; Cuvier's The Animal Kingdom ; Murphy's Habit 

 and Intelligence ; Nicholson's The Eights of Animals ; Powell's Our 

 . Heredity from God. 



