IN OTHER COUNTRIES. 95 



* Betula alba. 





Salix purpurea. 



* nana. 



* 





reticulata. 



* Empetrum nigrum. 



* 





glauca. 



* Juniperus communis. 



* 





lanata. 



Salix. 



* 





arenaria. 



* Myrsinites. 







fusea. 



arbuscula 







caprea. 



* herbacea. 







pentandra. 



Continuing our N. W. course, we find in Lapland, ex- 

 tended between the latitudinal parallels of 65° — 71°, nearly 

 400 reputed British species, and amongst them 52 

 trees and shrubs. An immense accession to what we 

 have found on the corresponding coasts of America and 

 adjacent isles, forcibly demonstrating the superiority in 

 the climate of arctic Europe over that of arctic America. 

 But the enumeration of these must be postponed until 

 we consider the altitudinal or regional distribution of 

 plants in European countries. Instead, therefore, of 

 keeping a N. W. course from Hudson's Bay, we may 

 turn in a south-westerly direction towards the British 

 Isles, intervening between Iceland and which, we find the 

 numerous group of little isles called Faroe. Mr. Trevelyan 

 has recently published (Edinburgh Phil. Journal, No. 35.) 

 some interesting particulars of the climate and vegetation 

 of these isles. He concludes the mean temperature to 

 be 45^°, that of summer 54^°, and of winter 37?°. Several 

 circumstances induce me to believe that the observations 

 (by different observers, in the past century) from which 

 his calculations are made, cannot be relied on precisely. 

 The result is too high, indicating a climate almost equal 

 to that of the north of Scotland. It is not improbable 

 that we shall come nearer to the truth by taking off 2° or 

 3°; indeed Mr. Trevelyan's own observations in 1821 

 make the summer only 52°. Small islands exposed to the 

 stormy winds of the Atlantic are peculiarly unsuited to 

 the growth of trees or shrubs, and we accordingly find 



