1. Incommensurability and theory comparison in experimental biology

   • Marcel Weber

   OriginalPaper Pages: 155 - 169

2. Species, languages, and the horizontal/vertical distinction

   • David N. Stamos

   OriginalPaper Pages: 171 - 198

3. Biological Hierarchies, Their Birth, Death and Evolution by Natural Selection

   • Robert W. Korn

   OriginalPaper Pages: 199 - 221

4. The Architects of the Evolutionary Synthesis in National Socialist Germany: Science and Politics

   • Thomas Junker
   • Uwe Hoßfeld

   OriginalPaper Pages: 223 - 249

5. ``Two'' Many Optimalities

   • Oscar Vilarroya

   OriginalPaper Pages: 251 - 270

6. Lost: One Gene Concept. Reward to Finder

   • Paul E. Griffiths

   BookReview Pages: 271 - 283

7. I, Primate

   • Robert A. Wilson

   BookReview Pages: 285 - 299

8. Agar's Review of Katz

   • Nicholas Agar

   Erratum Pages: 301 - 301