1. Elso sterrenberg barghoorn June 30, 1915 – January 27, 1984

   • Lynn Margulis
   • John F. Stolz

   In Memoriam Pages: 1 - 3

2. Clay as a substitute for protein in pseudoenzymes M. M. Mortland

   • J. P. Ferris

   Commentary Pages: 5 - 6

3. The spark discharge synthesis of amino acids from various hydrocarbons

   • David Ring
   • Stanley L. Miller

   OriginalPaper Pages: 7 - 15

4. Prebiotic formation of ‘energy-rich’ thioesters from glyceraldehyde and N-acetylcysteine

   • Arthur L. Weber

   OriginalPaper Pages: 17 - 27

5. The investigation of the hcn derivative diiminosuccinonitrile as a prebiotic condensing agent. The formation of phosphate esters

   • J. P. Ferris
   • H. Yanagawa
   • T. E. Mallare

   OriginalPaper Pages: 29 - 43

6. Hydrolytic properties of phenylalanyl- and N-acetylphenylalanyl adenylate anhydrides

   • James C. Lacey Jr.
   • Nalinie Senaratne
   • Dail W. Mullins Jr.

   OriginalPaper Pages: 45 - 54

7. Chemical evolution and the origin of life

   • Linda G. Pleasant
   • Cyril Ponnamperuma

   OriginalPaper Pages: 55 - 69

8. Book review

   • John R. Cronin

   BookReview Pages: 71 - 72

9. Announcement

   Announcement Pages: 73 - 73