72 



F. Børgesen. 



It consists of 20 samples preserved in spirit and 10 dried spe- 

 cimens. The localities from which the collections come are arranged 

 from north to south in the following list. 



Germania Land : — ^ 



Rypefjeld. 



Hvalrosodde, 



Dove Bugt, 



Lille Snenæs, 



Snenæs, 



Storm кар, 



Vester Elv, \ 



Danmarks Havn, 

 Basiskæret, ) 



Termometerfjeld, 



Kap Bismarck, 



Yderbugten, 



Between 77°— 76° 43' N. Lat. 

 and 21°— 17° 30' W. Long. 



In general the material collected may be regarded as rather 

 poor, both as to quantity and quality. Certainly a fe\v samples 

 from "Vester Elv" (river) contained a great number of species but 

 on the other hand the number of individuals was for most species 

 very few; of several species I have only found one single specimen. 

 This has made the determination decidedly troublesome. 



The reason why the material upon the whole is so comparatively 

 poor and the collections so small, often only consisting of a trifle 

 at the bottom of the glass, of which even a great part was earth 

 particles etc., is certainly that the manner of collecting was not the 

 best one: a plankton-net was placed in running water and left there 

 for several hours. In this way nearly all the Desmids named in 

 the following list were collected and also several of the other spe- 

 cies. Of course some bigger algæ e. g. Nostoc and clumps of algæ 

 are collected along the sides of some lakes. On the other hand 

 there are scarcely any collections made of small fixed algæ. 



Judging from the really rather rich collections from Vester Elv 

 gathered in this somewhat unpractical way I think it beyond doubt 

 that a skilled algologist would be able to find a considerably greater 

 number of species. 



From this point of view I do not think it would be worth while 

 to try and make a detailed comparison Ojf the Freshwater 

 alga flora from West Greenland and the surrounding lands 

 W4th that of East Greenland. I shall restrict myself to pointing 



' The localities here given are arranged from N. W. to S. E. 



