During my voyage in 1907 — 09 I devoted much time to the study of marine algse. 

 Large collections were made, and it was my intention to make a very detailed 

 study of all the material available from Subantarctic America. In 1911, I spent 

 tvvo months at the biological station on Heligoland with Professor Dr. Paul Ktjckuck, 

 who was at that time occupied with monographical work in the Phaeophyceae. What 

 he did to promote my work is not told in a few words. It is indeed very sad that 

 he did not live to receive my thanks for all that I owe to him; his fine library, his 

 unique collection of microscopic slides, and, last not least, his enthusiasm, that made 

 him sacrifice much time for my sake, all largely contributed to the results of my 

 studies. Forced to leave his beloved island at the outbreak of the war, he subse- 

 quently took up his quarters at the Dahlem Museum. We continued to discuss some 

 open questions concerning my algse, and I had just received a letter from him telling 

 me that the first part of his work, where some of my species were to be treated, 

 was nearly finished, when death suddenly put a stop to his active life, bereaving me 

 of a faithful friend and the algological science of one of its very best men. I had 

 handed över some of the Ectocarpacese and the Elachistacese to him, and some of 

 the figures published here, drawn by me under his supervision, were intended for his 

 monograph. Some of his notes, especially on Gononema and the Elachistas, which 

 I had proposed as new species, were sent to me af ter his death. 



While waiting for his memoir, I had laid aside my material for some years and 

 I did not take up the work again until after my return from the Juan Fernandez 

 expedition in December, 1917. As said above, my first intention was to make a 

 very detailed study of the collection ; this, however, would have delayed the publica- 

 tion for another number of years, and, on the other hand, the cost of printing being 

 very high, it became necessary to condense the descriptions and discussions as much 

 as possible. What I publish here is therefore a list of the species with notes on some 

 of them. The numerous figures, drawn at double the enlargement indicated and 

 reduced to half size, will, I hope, help the reader to get a fairly good idea of some 

 of the more interesting Subantarctic species. 



My treatise on the algse of the Swedish South Polar Expedition together with 

 the present paper will show, I think, that there is along the coasts of Subantarctic 

 America and round the islands in the South Atlantic a rich and quite interesting 

 marine flora. The time has come, according to my opinion at least, when some 

 competent person ought to take up algological work in the field and with laboratory 

 facilities. The lighthouse near Cape Pembroke in the Falkland Islands would make 



