CONTENTS. 



Page 



INTRODUCTION 1 



CHAPTER I. 



The Separate Species and their Distribution 3 



Diatomaceae 4 



Peridiniales 22 



Ciliata 24 



Rhizopoda 29 



Silicofiagellata 29 



Systematically Unknown Forras 31 



CHAPTER IL 



Survey of the Stations 32 



Station F 23 32 



F 30 33 



F 41 34 



F 50 35 



F 61 35 



F 74 36 



CHAPTER III. 



Remarks on the Conditions of Lite and Quality of the Plankton 37 



Salinity 37 



Ice-Conditions 38 



Arctic Species 38 



Size of the Species 39 



BIBLIOGRAPHY 41 



TABLE. 



