Botanic Garden of Harvard University; also for assist ance from Dr. C. G. Hopkins, Professor of Agronomy, Uni versity of Illinois; Dr. W. J. V. Osterhout, Professor of Botany, and B. M. Watson, Instructor in Horticulture, both of Harvard University; and Joseph N. Campbell, a practical gardener at Sanger, California. Among the books that have been useful to the author in his garden work are the following: The Home Vegetable Garden, Rockwell; The Woman's Hardy Garden, Ely.