The life history of Decapods. 



Appearance in embryo of oro^ans only functional 

 in lower forms, e. g., gill-slits in vertebrates. 



5. The evidence from Vestigial Organs. 

 (Romanes, pp. 65-97 ; Wiedersheim.) 



Teeth and ear of foetal whale. 



Limbs of python. 



Wings of Apteryx. 



Wings of insects of Madeira and Kerguelen. 



Blind animals in caves. 



Agassiz's views. 



Universal occurrence of vestigial organs. 



Man. 



Nictitating membrane. 



Muscles of external ear. 



Feet and hands of infants. 



Tail. 



Vermiform appendix of the coecum. 



Ear. 



Hair. 



Teeth. 



6. The evidence from Homologies. 



(Romanes, pp. 50-65.) 



Homology without analogy. 

 Whales and seals. 



Homology with analogy. 

 The wings of vertebrates. 



Analogy without homology. 



Contrast between eye of octopus and of fish. 



Structure of Dinornis opposed to the idea of 

 special creation of types. 



The cocoanut crab of Keeling Island. 



