fEMPEHATURE. 71 



along the shore of Finmark by the outlying islands. It 

 then traverses the prefectures of Tromso and of Nordland 

 on its way towards the interior of the country, about mid- 

 way between the coast and the mountain chain of Kjoelen. 

 In the prefecture of North Drontheim it bends further 

 inland from the coast, so that the upper part only of the 

 valley of Namdal and of the Findlider finds itself on the 

 east side the coldest side of this line. Touching then 

 the eastern frontier of the kingdom to the east of the 

 lower part of Drontheim fiord, the line inclines toward 

 the south-west, and encircles the Drontheim and Dovre 

 fjelds. Thence it follows the line of the watershed of the 

 Langefjeld, keeping in the same direction by places a 

 little to the west, on to (Ever-Telemark, the higher moun- 

 tain of which it slightly grazes. Then it passes off, with a 

 general direction towards the north-east, and almost in a 

 straight line to the north of Lakes Kroederen and Speri- 

 ten ; cuts the Randsfiord and the Miosen a little to the 

 south of the church of Elverm, ia (Esterdal, to pass on 

 into Sweden towards the east. It continues its principal 

 direction towards the north-east, until it crosses the Gulf 

 of Bothnia at its contraction between the Umea, in 

 Sweden, and Carlely, in Finland. 



In Norway this isothermal line comprises about 140,000 

 square kilometres, having a population of about 190,000 

 inhabitants. 



Around this isotherm of + 2 C. there group other iso- 

 therms of a higher temperature. These succeed one 

 another at short distances on the west side, but at much 

 greater distances on the east side. On the north coast 

 the colder air from the Arctic Ocean forces the isotherms 

 to deviate a little more from each other on the two sides 

 than they do further to the south. 



The isothermal line of 4 C., say 39 Fahr., follows the 

 coast line from the prefecture of North Drontheim to the 

 valley of Romsdal. It passes along then within ths co.ist, 

 at a distance of from 3J to 40 kilojaotres. It baacU 



