Contents. 



Pag. 



Introduction __ 3. 



The definition and division of the Arctic Sea _ 4. 



The general character of the vegetation _ 6. 



Probable causes of the peculiarities in the general character of the arctic Flora 20. 



Survey of the composition of the Flora of the Arctic Sea -.. 34. 



The history of the Flora of the Arctic Sea 48. 



Provinces of the arctic marine Flora __ .._ 62. 



The conditions of life of the arctic marine algae ___ 80. 



Species and forms of the Flora of the Arctic Sea 86. 



List. of Literature ._ _ 325. 



Explanation of the figures _ 333. 



Index - - 345. 



