FINDING NATURE’S TREASURES 
179 
Jack. “There is a caterpillar called the silkworm that 
eats the leaves of the mulberry tree, and then spins a 
cocoon of silk. Men get the silk to make cloth by unwind¬ 
ing the threads of the cocoon. So silk is really made 
from the leaves of trees." 
“Is the cocoon of the silkworm like the cocoon made 
by the Cecropia caterpillar?'' asked Buddy. 
“Yes, they are very much alike," said Uncle Jack. 
“The Cecropia cocoon is larger, but the threads in it are 
not so strong as those the silkworm makes for its co¬ 
coon." 
