EIVERS. 



101 



amount of their rainfall. Thus, going northwards, the Ljusna, Ljungan, Indals, 

 Angerman, Umea, Skellefteâ, Piteâ, Luleâ, Kalix, and Torneâ all discharge into 

 the Gulf of Bothnia an equal volume of water, estimated at upwards of 70,000 cubic 

 feet. The current of each is prolonged far into the sea, whose waters, however, 



Fig. 52. — The Tyki-fioud. 

 Scale 1 : 250,000. 



I0°10 



10° 20 £ of- G 



5 Miles. 



are so slightly saline that the contrast is here scarcely noticed, which is at once 

 detected at the mouths of the Gota and Glommen. 



The discharge of the Scandinavian rivers is mostly better regulated than that 

 of the continental streams, a result due to the lakes which are traversed in their 

 course, and which equalise the floodings. At the end of April and in May the 

 melting snows, and in autumn the heavy rains brought by the west winds, raise 



