VOL. 4, PL. LXVII.

EXPLANATION OF PLATE LXVIII.

Figure 1. Poison Ivy (Rhus toxicodendron). Source of medicine. See page [354].

Figure 2. Box Elder (Acer negundo). Source of medicine and food. See pages [353], [394].

BULL., PUBL. MUS., MILW.

VOL. 4, PL. LXVIII.