1. Editorial

   • Shiro Morimoto

   EditorialNotes Pages: 332 - 332

2. AMP synthesis in aqueous solution of adenosine and phosphorus pentoxide

   • Y. Yamagata
   • H. Kojima
   • K. Inomata

   OriginalPaper Pages: 333 - 337

3. Formation of amino acids from reactor-irradiated ammonium acetate

   • M. Akaboshi
   • K. Kawai
   • Y. Honda

   OriginalPaper Pages: 339 - 345

4. Functions of the coacervate droplets

   • Hiroyuki Okihana
   • Cyril Ponnamperuma

   OriginalPaper Pages: 347 - 353

5. Catalytic mechanism of histone in peptide formation from phenylalanyl adenylate

   • Naoki Yamamoto
   • Masahiro Ishigami
   • Masataka Kinjo

   OriginalPaper Pages: 355 - 359

6. Laboratory simulation on interstellar chemical evolution

   • Y. Ishikawa
   • K. Kuriki

   OriginalPaper Pages: 361 - 367

7. Material cycling and organic evolution

   • Hiroshi Mizutani
   • Eitaro Wada

   OriginalPaper Pages: 369 - 376

8. Effect of high atmospheric CO₂ concentration on δ¹³ of algae

   • Hiroshi Mizutani
   • Eitaro Wada

   OriginalPaper Pages: 377 - 390

9. Comparative studies on biochemical properties of protein synthesis of an archaebacteria,Thermoplasma sp.

   • Masayuki Ohba
   • Tairo Oshima

   OriginalPaper Pages: 391 - 394

10. Asymmetrical radical formation in D- and L-alanines irradiated with tritium-β-rays

    • Mitsuhiko Akaboshi
    • Masato Noda
    • Keizo Kawamoto

    OriginalPaper Pages: 395 - 399

11. Enantioselective catalysis as a possible path for optical activation of organic compounds in nature

    • E. I. Klabunovskii

    OriginalPaper Pages: 401 - 404

12. A model for the development of genetic translation

    • C. C. King

    OriginalPaper Pages: 405 - 425

13. Role of succinic acid in chemical evolution

    • A. negron-Mendoza
    • C. Ponnamperuma

    OriginalPaper Pages: 427 - 431

14. Book reviews

    • Linda D. Caren
    • Betsey Dexter-Dyer Grosovsky

    BookReview Pages: 433 - 434