22 



CONARIO-HYPOFHYSIAL TRACT. 



In reference to the second exemplification of the alleged 

 " Unity of Composition," I need only refer to the ' Annales 

 des Sciences Naturelles/ torn. xix. p. 241, pi. xii. (1830), in 

 which Cuvier refuted GeofFroy's conclusions to his own satis- 

 faction and apparently that of the ' Academic des Sciences,' 

 illustrating his argument by diagrammatic views of the organs 

 which he exposed in an Octopus (fig. 9) and in a doubled-up 

 Quadruped (fig. 10). Among other difiiculties which he 

 thereby seemed to demonstrate, was the impossibility of 

 making the brain (figs. 9, 10, a) hold a corresponding 



Fig. 9. Fig. 10. 



Cuttle. Mammal. 

 Seheinatic views as referred to in the text. 



position in relation to the alimentary canal (ib. e), a fact 

 which was deemed by anatomists of the " Positive School " 

 conclusive as against the " Transcendentalists." 



Having satisfied myself that there was a way out of the 

 difficulty by rightly determining the homologies of the mouth 



