1. Serendiptity and origins of life research

   • James P. Ferris

   Commentary Pages: 547 - 548

2. Estimates of the maximum time required to originate life

   • Verne R. Oberbeck
   • Guy Fogleman

   OriginalPaper Pages: 549 - 560

3. Isotopic characteristics of simulated meteoritic organic matter: 1 — Kerogen-like material

   • John F. Kerridge
   • Ruth Mariner
   • Sherwood Chang

   OriginalPaper Pages: 561 - 572

4. Mixed-valence hydroxides as bioorganic host minerals

   • K. Kuma
   • W. Paplawsky
   • G. Arrhenius

   OriginalPaper Pages: 573 - 601

5. Chemical evolution of the citric acid cycle: Sunlight and ultraviolet photolysis of cycle intermediates

   • Thomas G. Waddell
   • Sunil K. Geevarghese
   • Jessica S. Newton

   OriginalPaper Pages: 603 - 607

6. Oligomerization reactions of deoxyribonucleotides on montmorillonite clay: The effect of mononucleotide structure on phosphodiester bond formation

   • James P. Ferris
   • Kamaluddin

   OriginalPaper Pages: 609 - 619

7. The distribution of amino acids in the genetic code

   • Liao Fu Luo

   OriginalPaper Pages: 621 - 631

8. Self-replicating micelles — A chemical version of a minimal autopoietic system

   • Pier Luigi Luisi
   • Francisco J. Varela

   OriginalPaper Pages: 633 - 643

9. Book reviews

   • Betsey Dexter Dyer
   • Peter Schuster
   • Nils G. Holm

   BookReview Pages: 645 - 652

10. 1990 Gordon conference on the origin of life

    Announcement Pages: 653 - 653