Inside this Issue
The Cover (Cassia surattensis var. suffruticosa)
The Editor's Page
By Donald S. Dimond
Arboretum Notes
What a Gardener Should Know About Soil Acidity
By Myron S. Anderson
Camptotheca Acuminata - Biography of Camptothecin
By Robert L. Smith
Ground Covers: Their Uses and Limitations
By Francis T. Ching
The Arboretum's Braille Terrace
By Maria Stewart
Calendar 1970
Bookshelf
By Margaret P. Smith
Speaking for the Foundation
By Ernest Hetherington
