66 Smithsonian Exploration in Alaska in 1904 



III. There are no facts to support the contention that the chmate 

 of the Arctic and sub-Arctic regions ever has been colder than it 

 is at present. There are no phenomena presented in those regions 

 that require a more severe chmate than that now existing to account 

 for them. There are no ice deposits in Alaska, except those of 

 large glaciers, that may be considered of Pleistocene age. There 

 are no ice-beds interstratified with the Pleistocene deposits of 

 Alaska. 



IV. That the various forms of land ice, together with the de- 

 posits of peat, now existing throughout the Arctic and sub-Arctic 

 regions of Alaska belong to the Recent period and these deposits 

 may be most conveniently and logically classified by their position 

 with reference to the Pleistocene and Recent formations and the 

 ice deposits cannot be differentiated satisfactorily into deposits of 

 snow or of water origin by their physical structure and character 

 alone. 



