A STUDY OF THE FROG 



ii 



palatine^ 

 fronto-parietal../-? 



k 



pterygoid-j.A. 



cervical vertebra 

 clavicle 



, spheno-ethmoid 

 -maxillary 



sacral 



ilium -Y\, 

 urostyle 



L-.cakaneum 



tibio-fibula 



astragalus 

 Fir,. 3. Skeleton of garden toad. 



