1. The rate of growth of asterionella formosa Hass. in relation to its ecology

   • J. C. Hughes
   • J. W. G. Lund

   OriginalPaper Pages: 117 - 129

2. A new species of volvulina playfair

   • Richard C. Starr

   OriginalPaper Pages: 130 - 137

3. The growth of Spirillum volutans ehrenberg in mixed and pure cultures

   • Beatrice T. Rittenberg
   • Sydney C. Rittenberg

   OriginalPaper Pages: 138 - 153

4. Quelques algues du Jura Français

   • Pierre Bourrelly

   OriginalPaper Pages: 154 - 158

5. Mutagenic effects of streptomycin in chlamydomonas

   • Ruth Sager
   • Yoshihiro Tsubo

   OriginalPaper Pages: 159 - 175

6. Über den Verlauf der Sporulation und der Protoplastenteilung in Synchronkulturen von Chlorella pyrenoidosa

   • Carl J. Soeder
   • August Ried

   OriginalPaper Pages: 176 - 189

7. Three new colorless Euglenophyceae from marine situations

   • James B. Lackey

   OriginalPaper Pages: 190 - 195

8. Nutrition of the American strain of Gyrodinium cohnii

   • L. Provasoli
   • Kenneth Gold

   OriginalPaper Pages: 196 - 203

9. Die Kohlensäureassimilation von Ochromonas malhamensis bei Thiamin- und Biotinmangel

   • H. Kauss
   • O. Kandler

   OriginalPaper Pages: 204 - 218

10. On ruttnera pringsheimii sp. nov. (Chrysophyceae) from the Coastal Waters of India

    • R. Subrahmanyan

    OriginalPaper Pages: 219 - 225

11. The influence of potassium and sodium ions on the negative pasteur effect in Brettanomyces claussenii custers

    • T. O. Wikén
    • A. J. M. Verhaar
    • W. A. Scheffers

    OriginalPaper Pages: 226 - 236