1. The development of root hairs in angiosperms

   • R. G. H. Cormack

   OriginalPaper Pages: 583 - 612

2. Control of pollination in sugar-beet

   • Alexander Archimowitsch

   OriginalPaper Pages: 613 - 628

3. The nature of the fungicidal action of copper and sulfur

   • S. E. A. McCallan

   OriginalPaper Pages: 629 - 643