72 FORESTRY OF NORWAY. 



inwards in passing all the great fiords, and follows the 

 general direction of the coast to the Christiania fiord, 

 whence it goes off to the east a little beyond Christinia, 

 and enters Sweden. 



The isotherm of 6 C., say 43 Fahr., follows a like 

 direction to the middle of the Christiania fiord, where 

 it diverges to the south-east, and passes thus into 

 Sweden. 



The isotherm of 7 C., say 45 Fahr., follows the coast 

 line from Cape Stat, inflecting a little in the Sogne fiord, 

 and again much more to the head of the Hardanger fiord ; 

 it cuts the Jaaderon and continues to the Naye, to follow 

 thence the coast, passing hard by^the town of Arendal, 

 whence it takes a south-easterly direction, traversing the 

 Kategat, Southern Sweden, and the Baltic, to the coast of 

 Pomerania. Thus it may be seen that the shore of Nor- 

 way, from the Drontheim fiord to the Christiania fiord, 

 has a mean average temperature of from 6 to 7 C., or 

 40 to 45 Fahr. In some favoured spots on the Hardan- 

 ger fiord, and in the counties of Jaederen and Lister, the 

 mean annual temperature is higher, ranging from 7 to 

 8 C. The mean annual temperature of Norway may be 

 estimated at 2'5 C., or 36'5 Fahr. The mean annual 

 temperature of Christiania is 5 16' C., or 41*25 Fahr. ; 

 in the course of the last forty years it has varied from 4 

 to 6-5 C., or 39-2 to 437 Fahr. 



