80 FORESTRY OF NORWAY. 



the Gulf of Bothnia. In January the relative humidity 

 is at Tromso and at Bodo only 77 per cent, at Stat 80 

 per cent. ; but at Christiania it is 88 per cent, at Vardo 

 90 per cent., and on the east coast of Sweden about 96 

 per cent. This proportion, which is the opposite of that 

 of the whole year, is mainly attributable to the high 

 winter temperature of the coast, and the low winter 

 temperature of the interior. 



In summer the shore from Vardo to Cape Stat, and to 

 the Jaederen, has the greatest relative humidity, more than 

 80 per cent, while the central part of the peninsula has a 

 pretty dry atmosphere, the relative humidity of which is 

 only from 50 to 60 per cent. 



The variation of this relative humidity is a little irregu- 

 lar on the west coast. It is, on the contrary, more regular 

 to the east of the Naze, and in the diocese of Drontheim. 

 The month of May is remarkable in S<. uthern Norway as 

 being the dryest of all the months. Everywhere the 

 greatest humidity occurs in the winter season. On the 

 west coast it is considerable in August, but diminishes 

 again in October. In the western part of the country, 

 and in the diocese of Drontheim, it has its minimum in 

 winter and its maximum in winter without any marked 

 interruptions in the regularity of its increase and diminu- 

 tion. The annual variation of relative humidity is 

 greatest in the eastern part of the country, where it 

 exceeds 30 per cent. It amounts to 20 per cent in the 

 Drontheim fiord; it is a little under 15 per cent, along 

 the Skagerack, at Bergen, Inner-Sogne, and Fosen ; and 

 below 10 per cent at Skudesnaes, on the coast of the 

 Romsdal, at the Lofoden Islands, and on the coast of 

 Finmark. 



The number of foggy days varies with different locali- 

 ties. While at Vardo there are 18 in the year, in the 

 Lofoden Islands 13, in Christiansand 7, and the Dovre- 

 fjeld 10, in Aolesund, Skudesnaes, Mandal, and Sandosund 

 there are 20, in Bergen 40, and in Christiania. 



And the annual variation is characteristic, In the 



