1. Commentary

   • James P. Ferris

   ReviewPaper Pages: 219 - 219

2. Photoprecipitation and the banded iron-formations — Some quantitative aspects

   • Paul S. Braterman
   • A. Graham Cairns-Smith

   OriginalPaper Pages: 221 - 228

3. Possible biological origin of banded iron — Formations from hydrothermal solutions

   • Nils G. Holm

   OriginalPaper Pages: 229 - 250

4. Efficient near ultraviolet light induced formation of hydrogen by ferrous hydroxide

   • Zofia K. Borowska
   • David C. Mauzerall

   OriginalPaper Pages: 251 - 259

5. Energy yields for hydrogen cyanide and formaldehyde syntheses: The hcn and amino acid concentrations in the primitive ocean

   • Roscoe Stribling
   • Stanley L. Miller

   OriginalPaper Pages: 261 - 273

6. The formation of amino acid precursors in the reaction of atomic carbon with water and ammonia at 77 K

   • Daniel W. Mcpherson
   • Kazi Rahman
   • Philip B. Shevlin

   OriginalPaper Pages: 275 - 282

7. Studies on the structure of HCN oligomers

   • Kimiko Umemoto
   • Makoto Takahasi
   • Katsuyuki Yokota

   OriginalPaper Pages: 283 - 293

8. Prebiotic synthesis of imidazole-4-acetaldehyde and histidine

   • Chun Shen
   • Lily Yang
   • J. Oró

   OriginalPaper Pages: 295 - 305

9. Non-enzymatic synthesis of the coenzymes, uridine diphosphate glucose and cytidine diphosphate choline, and other phosphorylated metabolic intermediates

   • A. Mar
   • J. Dworkin
   • J. Oró

   OriginalPaper Pages: 307 - 319

10. Liposomes with polyribonucleotides as model of precellular systems

    • Isabel Baeza
    • Miguel Ibañez
    • J. Oró

    OriginalPaper Pages: 321 - 331

11. Kinetic analysis of the template effect in ribooligoguanylate elongation

    • Anastassia Kanavarioti
    • David H. White

    OriginalPaper Pages: 333 - 349

12. Nucleic acid-like structures II. Polynucleotide analogues as possible primitive precursors of nucleic acids

    • Alan W. Schwartz
    • J. Visscher
    • J. Niessen

    OriginalPaper Pages: 351 - 357

13. Binding of DNA hairpins to an assembler-strand as part of a primordial translation device

    • Ulrich Baumann

    OriginalPaper Pages: 359 - 366

14. Selective emergence and survival of early polypeptides in water

    • André Brack

    OriginalPaper Pages: 367 - 379

15. Search for catalytic properties of simple polypeptides

    • B. Barbier
    • A. Brack

    OriginalPaper Pages: 381 - 390

16. Energy metabolism of a thermoacidophilic archaebacterium,Sulfolobus acidocaldarius

    • Takayoshi Wakagi
    • Tairo Oshima

    OriginalPaper Pages: 391 - 399

17. The relationship between the biosynthetic paths to the amino acids and their coding

    • John H. McClendon

    OriginalPaper Pages: 401 - 417

18. Origin and evolution of photosynthetic reaction centers

    • John M. Olson
    • Beverly K. Pierson

    OriginalPaper Pages: 419 - 430

19. Structural elements and organization of the ancestral translational machinery

    • R. Rein
    • S. Srinivasan
    • M. Shibata

    OriginalPaper Pages: 431 - 438

20. Information theory and the genetic code

    • A. Figureau

    OriginalPaper Pages: 439 - 449

21. Commentary

    • James P. Ferris

    ReviewPaper Pages: 451 - 452