FIFTH TERTIARY PERIOD. 



regions clothed with the richest vegetation, nature presented 

 everywhere during this period the most varied and exuberant 

 flora, which included nearly all the vegetable forms enumerated in 



S r 



the preceding period, with the addition of numerous others, among 

 which may be mentioned liquidamber, willow, myrtle, anemone, 

 plum-tree, magnolia, holly, rhododendron, azalea, &c. 



139 



