1. Professor Dr Johanna Westerdijk 1917–1942

   • Marie P. Löhnis

   OriginalPaper 01 December 1942 Pages: 1 - 9

2. On the action of sulfanilamide

   • K. C. Winkler

   OriginalPaper 01 December 1942 Pages: 10 - 18

3. The cultivation of filterable viruses in vitro

   • P. H. H. de Bruyn

   OriginalPaper 01 December 1942 Pages: 19 - 31

4. On bacteria decomposing cholesterol

   • J. D. Tak

   OriginalPaper 01 December 1942 Pages: 32 - 40

5. Are the toxic properties of a staphylococcal filtrate manifestations of one or more constituents?

   • W. Aeg Timmerman

   OriginalPaper 01 December 1942 Pages: 41 - 47

6. Abstracts

   Abstract 01 December 1942 Pages: 48 - 52

7. The electrophoretic behaviour ofBacterium typhosum in relation to the changes of the antigenic structure observed in the smooth-rough variation

   • W. A. L. Dekker
   • C. van der Meer
   • R. Th. Scholtens

   OriginalPaper 01 December 1942 Pages: 53 - 70

8. Some observations on the metabolism of bacteria oxidizing molecular hydrogen

   • A. J. Kluyver
   • A. Manten

   OriginalPaper 01 December 1942 Pages: 71 - 85

9. On the action of sulfanilamide

   • K. C. Winkler
   • H. W. Julius

   OriginalPaper 01 December 1942 Pages: 86 - 96

10. Abstracts

    Abstract 01 December 1942 Pages: 97 - 104

11. Beschreibung Einiger Neuer Pilzarten aus dem Centraalbureau Voor Schimmelcultures, Baarn (Nederland)

    • F. H. van Beyma thoe Kingma

    OriginalPaper 01 December 1942 Pages: 105 - 122

12. Molybdenum as a growth factor ofAzotobacter chroococcum

    • S. J. Burema
    • K. T. Wieringa

    OriginalPaper 01 December 1942 Pages: 123 - 133

13. Salmonella antigens inBacterium coli and paragglutination

    • J. H. Bekker
    • H. H. Vink

    OriginalPaper 01 December 1942 Pages: 134 - 138

14. On the action of sulfanilamide

    • H. W. Julius
    • K. C. Winkler

    OriginalPaper 01 December 1942 Pages: 139 - 154

15. Some observations on the utilization of organic compounds by purple sulphur bacteria

    • E. C. Wassink
    • A. Manten

    OriginalPaper 01 December 1942 Pages: 155 - 163

16. The isolation ofChromatium Okenii and its behaviour in different media

    • A. Manten

    OriginalPaper 01 December 1942 Pages: 164 - 168