WANDERERS THAT FLOAT. 
Some kinds of plants live in the water or on the edge 
of it. These often have seeds or seed pods light enough 
to float. You can gener- 
ally see little seeds float- 
ing about on ponds, if you 
take the trouble to look. 
Into these ponds come 
ducks or herons or other 
waterfowl. The birds 
come to find something 
to eat, and as they swim 
or wade about they come 
in contact with the wet 
seeds that cling to them. 
After a time the birds, 
bearing the seeds on 
plumage, beak, or feet, 
fly to another pond or 
marsh, and as they alight 
the seeds are floated off. 
The wind then blows them to the shore, or else in 
time, if they live in the water, they sink to the bottom 
and sprout. 
84 
Cocoanut palms. 
