COMPARISONS OF STRUCTURE 

 m ANIMALS. 



CHAPTER I. 



PRELIMINARY OBSERVATIONS. 



The intelligent reader need not be apprised 

 that the field of Comparative Anatomy is 

 vast and extensive. So rich is the profusion of 

 objects which it offers for contemplation, that 

 the most powerful minds, after years of toilsome 

 investigation and research, leave the greater 

 part still unexplored ; and though student suc- 

 ceeds student, and labourer follows labourer, 

 the philosopher of a distant period, as he 

 recognises the hand of God, will find 

 occasion to say, with one of old, " Lo, 

 these are parts of Hia ways : but how little 

 a portion is heard of him !" Our sketch of 

 some of the parts of animal stnicture will be 



