1. Acetylene reduction by rumen microflora

   • R. F. Elleway
   • J. R. Sabine
   • D. J. D. Nicholas

   OriginalPaper Pages: 277 - 291

2. Analysis of blue-green and red algal ribosomal-RNAs by gel electrophoresis

   • Gary P. Howland
   • J. Ramus

   OriginalPaper Pages: 292 - 298

3. Über die Bildung von flüchtigen Gärungsnebenprodukten durch Milchsäurebakterien

   • F. Radler
   • Barbara Gerwarth

   OriginalPaper Pages: 299 - 307

4. Ultrastructure of treponema pallidum Nichols following lysis by physical and chemical methods

   • Sally Jackson
   • S. H. Black

   OriginalPaper Pages: 308 - 324

5. Ultrastructure of Treponema pallidum Nichols following lysis by physical and chemical methods

   • Sally Jackson
   • S. H. Black

   OriginalPaper Pages: 325 - 340

6. Nitrogen fixation by unicellular blue-green algae

   • Rosmarie Rippka
   • Alasdair Neilson
   • Germaine Cohen-Bazire

   OriginalPaper Pages: 341 - 348

7. Production of protochlorophyll, protopheophytin, and bacteriochlorophyll by the mutant A1a of Rhodopseudomonas capsulata

   • Gerhart Drews
   • Ingeborg Leutiger
   • Rita Ladwig

   OriginalPaper Pages: 349 - 363

8. The carotenoids of Myxococcus fulvus (Myxobacterales)

   • Hans Reichenbach
   • Hans Kleinig

   OriginalPaper Pages: 364 - 380