406 APrENDix. 



character. Further, since the historical deluge cannot 

 have heen of very long duration, the physical changes 

 separating the deposits containing the remains of paleo- 

 cosmic men from those of later date would in like manner 

 be accounted for, not by slow processes of subsidence, 

 elevation, and erosion, but by causes of more abrupt and 

 cataclysmic character. This subject the writer has referred 

 to in previous publications,* and he is glad to see that 

 prominence has recently been given it by so good a geo- 

 logivst as the Duke of Argyll, in a late number of the 

 Contemporary Review. 



* " Origin of the "World," «' Fossil Men." See also papers by 

 Howorth in the Geological Magazine for 1881-82. 



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