1. Auxin and yeast

   • N. Yanagishima
   • C. Shimoda

   Interpreting Botanical Progress Pages: 1 - 14

2. The mineral absorption process in plants

   • N. HiGinbotham

   Interpreting Botanical Progress Pages: 15 - 69

3. Errata

   • George Eiten

   Erratum Pages: 70 - 70

4. A new classification of the ontogenetic types of stomata

   • E. Fryns-Claessens
   • W. Van Cotthem

   Interpreting Botanical Progress Pages: 71 - 138