GENERAL CONCLUSIONS. 205 



is similuv, but there was a greater amount of differential 

 elevation as between the mountains and the plains. In 

 the mountainous regions of the west, also, more especially 

 in the interior of lU'itish Columbia, the evidence of great 

 local glaciers is much more pronounced tlian on our lower 

 mountains of the east. 



I shall not attempt to extend these generalizations to 

 the country south of the Canadian border, but must 

 respectfully warn those of my geological friends who 

 insist on portentous accunudations of land-ice in that 

 (piarter, tliat the nu^frial cannot be supplied to tliem 

 from Canada. They must establish gathering-grounds 

 within their own territory. 



Note on lleecnt Papers. 



While this work was in the press the discussion of 

 ([uestions relating to the glacial period in the United 

 States and Europe has been actively proceeding. Sir 

 Henry Howorth has treated the subject in an almost 

 exhaustive manner in his work the " Glacial Nightmare," 

 in whicli his point of view is very nearly that of the 

 l)resent work; though not like this confined to the case of 

 Canada. Many important memoirs have also appeared in 

 American and liritish periodicals, and in those of the 

 Continent of Europe. Of these I shall notice only the 

 following, as bearing closely on the scope of the previous 

 pages : 



Prof. Bonney, F.R.S., in a paper read 1 fore the Royal 

 ( Tcographical Society,* discusses in detail the question of 

 glacial erosion, and arrives at the same conclusion which 

 I stated in 186G, after visiting the Savoy Alps, viz., that 



* " Nature," March 30, 1893. 



