212 



EUSSIA IN EUROPE. 



Such lacustrine inundations are of frequent occurrence, all the upper lakes 

 tending constantly to drain into the lower basins. Hence, as Ave ascend from the 

 lowlands about Lake Ladoga towards the higher grounds of Suomen-Selkii, these 

 basins uniformly diminish in size, and betray evidence of the former higher levels. 



Still, of all European lands, Finland has least succeeded in getting rid of the 

 surface waters representing the lacustrine pciiod which followed the glacial epoch. 



Fig. 103. — HoYTIAINEN Dkainaoe Wokks. 

 According to Ki apotkin. Se ile 1 : 145,000. 



C.of R 



4-702; 



L.of G. 



49°45" 



47°95' 



4gM5' 



fe:v^^i:i^ Keclaimtd Lacd. 



■^-^—.^^——. 2 Miles. 



It is studded even more than Sweden with lakes, ponds, pools, and swamps, and in 

 the south, or as far north as Lake Uleâ, nearly half the surface is still under water. 

 Since the retreat of the glaciers the river alluvia and veg-etation have been unable 

 to fill in more than a very small portion of the lacustrine basins. Thanks to its 

 hard gréinite, gneiss, and porphyry rocks, combined with the slight tilt of the land 



