1. The background to Otto Warburg's conception of the Atmungsferment

   • Robert E. Kohler

   OriginalPaper Pages: 171 - 192

2. The re-examination of Spallanzani's interpretation of the role of the spermatic animalcules in fertilization

   • Iris Sandler

   OriginalPaper Pages: 193 - 223

3. The historical context of natural selection: The case of Patrick Matthew

   • Kentwood D. Wells

   OriginalPaper Pages: 225 - 258

4. Bonnet and Buffon: Theories of generation and the problem of species

   • Peter J. Bowler

   OriginalPaper Pages: 259 - 281

5. The biometric defense of Darwinism

   • B. J. Norton

   OriginalPaper Pages: 283 - 316

6. Six recent additions to the history of physiology in the USSR

   • Josef Brožek

   Essay Review Pages: 317 - 334