30” 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 thé shore from Vardo to Cape Stat, and to 
the Jederen, 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 ‘ 
