1. Atmospheric constraints on the evolution of metabolism

   • James C. G. Walker

   OriginalPaper Pages: 93 - 104

2. The evolution of the solar ‘constant’

   • Michael J. Newman

   OriginalPaper Pages: 105 - 110

3. The gas vacuole: An early organelle of prokaryote motility?

   • James T. Staley

   OriginalPaper Pages: 111 - 116

4. Structural features of manganese precipitating bacteria

   • Kenneth H. Nealson
   • Bradley Tebo

   OriginalPaper Pages: 117 - 126

5. Sulphur isotope rations in late and early Precambrian sediments and their implications regarding early environments and early life

   • H. G. Thode

   OriginalPaper Pages: 127 - 136

6. Limits to life at low temperatures and at reduced water contents and water activities

   • Peter Mazur

   OriginalPaper Pages: 137 - 159

7. Physical chemistry and evolution of salt tolerance in halobacteria

   • Janos K. Lanyi

   OriginalPaper Pages: 161 - 167

8. Halophily and halotolerance in cyanophytes

   • Stjepko Golubic

   OriginalPaper Pages: 169 - 183

9. Purification and properties of malate dehydrogenase from the extreme thermophileBacillus caldolyticus

   • Hordur Kristjansson
   • Cyril Ponnamperuma

   OriginalPaper Pages: 185 - 192

10. Announcement

    Announcement Pages: 193 - 193