874 



Dr. F. Borge sen paid his first visit to the islands in the same 

 year. My first observations were also made about this time when 

 I landed at Trangisvaag on Sydero on the outward and homeward 

 voyages of the Danish Ingolf-Expedition. A short note on our com- 

 bined observations on the vegetation with some hsts of piants was 

 pubhshed later (Borgesen and Ostenfeld-Hansen 1896). 



The systematised investigation of the vegetation of the islands, 

 projected by Prof E. Warming, was begun during the foUowing 

 year (1896), when Mr. C. Jensen investigated the moss-flora of 

 most of the islands, and Dr. Borgesen studied the algal flora of 

 several of them. C. Jensen's excellent account of his voyage (Jen- 

 sen 1897) contains many extracts from his diary which are of eco- 

 logical interest. There are numerous observations on the vegetation 

 and on the habitats of particular species, as well as reflections 

 on the influence of environment. This memoir has been of much 

 service to me, and will be referred to again and again in my chap- 

 ter on plant-associations. Mr. Jensen has not limited his observa- 

 tions to mosses only, but has recorded many noteworthy facts regard- 

 ing the vegetation as a whole, his extensive knowledge of the 

 flowering piants enabling him to give descriptions of plant-associa- 

 tions superior to those resulting from a one-sided study of either 

 flowering piants or mosses alone. 



The plant-associations of the Færoes are also dealt with in P. 

 Feilberg's »Fra Lier og Fjælde« (From slopes and mountains) 

 which was printed privatelj'^ as a manuscript (1900). The author 

 spent the summer of 1899 on the Færoes and Shetland, principally 

 to study vegetation from an economic point of view, and he gives 

 a delightful account of his travels. 



The paper deals mainly with the grassland of the cultivated 

 area, the cultivation of corn and potatoes, 'and the lower zone of 

 uncultivated land (»Haugen«). Although the purely botanical side 

 is only of minor importance from the author's point of view, yet 

 he gives some excellent descriptions of certain plant-associations. 



The grass-vegetation of the »Bo« and the cultivated fields is 

 first dealt with at considerable length; in a less degree the grass- 

 slopes and grass-moors, boggymoors, heather-moors and Calluna- 

 heaths. 



Special attention is directed to the constitution of the soil and 

 its influence on the composition of the vegetation, and the exception- 



