Ancient Glaciers of New Zealand. 265 



tralia; and on all of these, excepting the last, positive, and 

 in many places, astonishing, evidences of ancient glaciation 

 can be seen. 



As far as can be at present judged from the limited explo- 

 rations in those distant lands, the combined facts seem to 

 point to a time of extreme cold in the southern hemisphere, 

 answering to the similar period at the North, that has re- 

 ceived the long contested title of the Glacial epoch. 



Another parallel between the changes of climate in the 

 two hemispheres is indicated by the Tertiary deposits. 

 These at the South, like the Tertiary formations in Europe 

 and America, show by their fossils that a mild climate pre- 

 ceded the ancient glaciers, during which, as these formations 

 on the eastern coast of Africa prove, the forms of life now 

 indicative of tropical or sub-tropical conditions extended 

 farther towards the pole. 



