25S CARL SKOTTSBERG 



itiaresüa acideata and Laminaria Agardhi) from 70—100 fathoms. Ac- 

 cording to Rosenvinge, p. 235, they cannot have grown there. It is 

 his opinion, p. 236, that, on the coast of Greenland, no algai are found 

 at a greater dej^th than 30 fathoms. 



In the Antarctic zone I have made some elittoral finds of interest. 

 I have however ahvays tried to explain finds from the elittoral region, 

 even if dredged from a bottom, suitable for algae, as strangers brought 

 there by different agencies. Ice must be considered as the principal means 

 of transport. When icefloes run against the coast, they get packed 

 and screwed together in many ways, and alga; may easily be attached 

 to their lower parts. Then the packice disperses, the waves wash the 

 floes and the attached algae become free and sink to the bottom. 



I have found a remarkable number of algae in great depths, and 

 I shall therefore discuss these finds a little here, with reference to the 

 list of stations below. 



St. 5, off" Paulet Island, was dredged when I was ashore, so that 

 I had no opportunity personally of following the dredging. According 

 to the zoologists, the bottom was composed of gravel and small stones 

 and the depth was lOO — 150 m. Here we got quite a mass of /'Vö/vV/^^^'ß', 

 especially gigantic specimens of Gracilaria [Leptosarca] simplex (PI. IX) 

 all completely fresh and with the basal parties left. A couple of Fucoi- 

 dccc were also caught. The find pointed to an almost pure association 

 of Leptosarca. L. simplex is extremely thin and delicate, provided, as 

 it is, with numerous basal prolifications, the stipes of which are almost 

 as fine as a hair, so that nothing indicated that it had drifted there 

 and it may be concluded that it grew in the place where it was dred- 

 ged. But was it in 100 — 150 m..? The bottom near Paulet Island is 

 very uneven; it seems to me possible that the dredge has passed zones 

 of less depth, perhaps less than 75 m. (compare ROSENVINGE, 1. c. p. 

 235). St. 6 was somewhat of the same type. The journal says: sand 

 and gravel, 100 — 150 m. I obtained plenty of small Florideee, that 

 proved quite intact. Here too one species seemed to live associated, 

 viz. Schizoneura qiiercifolia, a species corresponding to Delesseria siiii/osa, 

 a related one, in the Arctic. St. 79 gave several algae, among which 

 were three large specimens o{ Desniarestia Harveyana, quite entire. The 

 depth noted was 129- — 150 m., the bottom was composed of volcanic 

 sand and gravel. It is not probable that the large Fucoideu- have grown 

 there, it seems more possible in the case of some small Flor idea'. At 

 St. 94 we found a depth of 104 m., clay mixed with gravel and stones. 



