ANCIENT GLACIERS IN EASTERN HEMISPHERE. 183 



depth of soil, are true glacial deposits, whose inequalities 

 of surface have since been much obliterated, through the 

 general influences of the lapse of time, and by the ceaseless 

 activity of man. 



An interesting series of moraines in the north of Ger- 

 many, bordering the Baltic Sea, was discovered in 1888 by 

 Professor Salisbury, of the United States Geological Sur- 

 vey. Its course lies through Schleswig-Holstein, Meck- 

 lenburg, Potsdam (about forty miles north of Berlin), 

 thence swinging more to the north, and following nearly 

 the line between Pomerania and West Prussia, crossing 

 the Vistula about twenty miles south of Dantzic, thence 

 easterly to the Spirding See, near the boundary of Po- 

 land. 



Among the places where this moraine can be best seen 

 are — " 1. In Province Holstein, the region about (espe- 

 cially north of) Eutin ; 2. Province Mecklenburg, north of 

 Orivitz, and between Biitow and Kropelin ; 3. Province 

 Brandenburg, south of Eeckatel, between Strassen and 

 Biirenbusch, south of Fiirstenberg and north of Evers- 

 walde, and between Pyritz and Solden ; 4. Province Posen, 

 east of Locknitz, and at numerous points to the south, and 

 especially about Ealkenburg, and between Lompelburg and 

 Barwalde. This is one of the best localities. 5. Province 

 West Preussen, east of Biitow ; 6. Province Ost Preussen, 

 between Horn and Widikin." 



Comparing these with the moraines of America, Pro- 

 fessor Salisbury remarks : 



" In its composition from several members, in its variety 

 of development, in its topographic relations, in its topog- 

 raphy, in its constitution, in its associated deposits, and 

 in its wide separation from the outermost drift limit, this 

 morainic belt corresponds to the extensive morainic belt 

 of America, which extends from Dakota to the Atlantic 

 Ocean. That the one formation corresponds to the other 

 does not admit of doubt. In all essential characteristics 



