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. Seat 
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 Jederon and continues to the Naye, to follow 
thence the coast, passing hard bygthe 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 Jederen 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 43°79 Fahr. 
