THE 



ANIMAL KINGDOM. 



Class, AVES* 



THE OVIPAROUS VERTEBRATED ANIMALS IN 

 GENERAL. 



Although the three classes of the vertebrated ovipa- 

 rous animals differ considerably from each other by 

 the quantity of respiration, and by every thing relat- 

 ing thereto, as the power of movement and the 

 energy of the senses ; they display, nevertheless, 

 many characters in common, when placed in opposi- 

 tion to the vertebrated vivipara. 



The hemispheres of their brain are narrow, nor 

 are they united by a corpus callosum. The tubercles 

 7iat6S are greatly developed, are penetrated by one 

 ventricle, and not covered by the hemispheres, but 

 visible below, or at the sides of the brain; the 



* The reader will observe that in the present division of our 

 work, instead of forming a tabular synopsis for the additional 

 species, we have subjoined them, in the proper places, to the text 

 of the Baron, and printed them, and any observations of our own, 

 in a small type and inner margin. 

 -=4 Vol. VI. B 



