1. Organotherapy and the emergence of reproductive endocrinology

   • Merriley Borell

   OriginalPaper Pages: 1 - 30

2. E. G. Conklin on evolution: The popular writings of an embryologist

   • J. W. Atkinson

   OriginalPaper Pages: 31 - 50

3. The rise and fall of Darwin's second theory

   • George James Grinnell

   OriginalPaper Pages: 51 - 70

4. The historical bases of the concept of allelopathy

   • R. J. Willis

   OriginalPaper Pages: 71 - 102

5. The history of ecology: Achievements and opportunities, Part two

   • Frank N. Egerton

   OriginalPaper Pages: 103 - 143

6. Essay review: Ernst Mayr on the history of biology

   • Phillip R. Sloan

   ReviewPaper Pages: 145 - 153

7. The J.H.B. bookshelf

   BookReview Pages: 155 - 160

8. Announcing a new journal

   Announcement Pages: 161 - 161