Abstract
Data on the temp., salinity, and density of the coastal waters of Labrador and Newfoundland, and on the possible sources of the Labrador Current, are followed by an annotated list of the phytoplankton collected 34 diatoms, 1 silicoflagel-late, 5 peridinians, and 3 infusorians. Many of these have been reported from the Gulf of Maine and the Norwegian fiords, and relatively few are definitely arctic forms. Thus temp. and salinity are evidently of minor importance in the distribution of these organisms. The surface microplankton of Labrador coastal waters was relatively poor during July and August.

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