30 



INTR OB UCTION. 



AOU^ 



apm 



Simstrai 



?fc^— sc 71 seoroan 

 ^~ . caput 





disitcU end 



Fi^S dorsai aspect 



coliLmna 

 wcrtt brails 

 X 

 SinistroL 



canalis 

 ntiLraliS 



dtx-iraL 



•aiimtntdifu 



limb 



rLO.o. TramectLon 





^^ Fif4 Hemi section 



Diagrams op Three Aspects of a Vertebrate, 

 Exhibiting the most General Features. 



