% FORESTRY OF NORWAY. 



distribution and growth of trees is different when the 

 deposit is in the form of snow from what it might have 

 been had it been in the form of rain ; therefore this also 

 demands attention. 



At Yardo rain falls during 54 days, and snow during 

 71 days of the year. The Dovrefjeld has 41 days of rain 

 and 48 of snow. In all other places at which observations 

 have been made rain falls much more frequently than 

 does snow. At Christiania the days of rain are double 

 those of snow ; at Bergen the number is five times as 

 great, and at the Lofoden Islands 1*5 times greater. 



As might have been anticipated, the greatest quantity 

 of snow falls in the winter. The summer months are 

 generally exempt from snow, even in Finmark ; at Vardo 

 there is no fall of snow in July and August. This is also 

 the case at Bodo. At the Lofoten Islands, on the contrary, 

 snow may fall any day, even in the months of July and 

 August, snow falling in each of these months upon an 

 average three times in ten years. In Southern Norway 

 the months of June, July, August, and September are 

 free from snow. 



At Vardo, and on the Dovrefjeld the number of days of 

 rain and of snow are about equal in May and in October ; 

 elsewhere it is so in the beginning of April and in Novem- 

 ber ; and on the west coast it is only so in the month of 

 March. At Bergen the number of the days of rain is in 

 excess of that of the days of snow. 



The quantity of rain falling in a day is pretty variable. 

 Least considerable in the central part of the country, it is 

 there calculated on the mean of the year, about 4 mm., 

 16 inches; it increases towards the coast At Vardo and 

 Bodo it is about 6 mm., '24 inches ; at Christiansand, 

 Skudesnaes, and Sandoesund, from 7 to 8 mm. j at Bergen 

 andMandal, about 11 mm., '44 inches. It is pretty nearly 

 proportionate with the annual rainfall, and with the num- 

 ber of rainy days. We may thence evolve the general 

 law that in these places in which there is the greatest 

 abundance of rain, this is attributable to the combination 

 of the three elements frequency, force, and duration. 



