THK SKELETON OF THE VERTEBKATE HEAD. 107 



luaxillaiies, tlie inaxillaries, and palatals, as elements of three 

 distinct cranial segments. In the com-se of my investigation 

 into the development of the teeth, I became early aware of tlie 

 correctness of Goethe's views on this subject, and have found 

 myself, therefore, unable to coincide with tlie doctrine of Pro- 

 fessor Owen as to the constitution of his palato-maxillaiy 

 or nasal lucmal arch. 



