A Spruce Tree 
The spruce is one of the most familiar and most highly 
prized of evergreens in many of our northern forests. Its res- 
inous exudate was formerly very popular as a commercial product 
known as “spruce gum.” Nowadays the demand for chew- 
ing gum has so increased that it has been necessary 
to find other materials for its manufacture, 
and the once-familiar spruce gum 
has practically disappeared 
from the market. 
