48 



PHYSIOGRAPHIC GEOLOGY. 



with great force ; but the review of geological history makes it still 

 more evident, by exhibiting the truth in a continued succession of 

 faunas and floras, giving this individuality a history looking back 

 to " the beginning." 



The great truth is taught by the air and waters, as well as by the 

 lands, that the diversity about us, which seems endless and without 

 order, is an exhibition of perfect system under law. If the earth 

 has its barren ice-fields about the poles, and its deserts, no less 

 barren, towards the equator, they are not accidents in the making, 

 but results involved in the scheme from its very foundation. 



