1. Tree growth

   • R. A. Studhalter
   • Waldo S. Glock
   • Sharlene R. Agerter

   OriginalPaper Pages: 245 - 365

2. The physiological function of the cereal awn

   • F. J. Grundbacher

   OriginalPaper Pages: 366 - 381

3. Vascular patterns in dicotyledons

   • W. R. Philipson
   • Ena E. Balfour

   OriginalPaper Pages: 382 - 404

4. The taxonomy ofAlternaria and species of this genus reported on apples

   • B. G. Tweedy
   • D. Powell

   OriginalPaper Pages: 405 - 412