MINT FAMILY 197 
ing great numbers of small seeds from its heads 
of clustered flowers, which appear to -be espe- 
cially adapted to receiving the visits of bumble- 
bees. The worker bees may be found upon the 
flowers at almost any time, going rapidly over a 
head and then flying quickly to another not far 
SELF-HEAL OR HEAL-ALL 
away. The anthers in the upper part of the 
corolla dust pollen upon the head of the visiting 
bee and this pollen is carried from flower to 
flower with surprising rapidity. In early times 
this plant was largely used for curing diseases, 
a fact to which its common name is due. 
