In the South people sometimes set fires in order to improve the grazing.

Settlers and farmers who are clearing land often start big brush fires that get out of their control.

Campers, tourists, hunters, and fishermen are responsible for many forest fires by neglecting to extinguish their campfires.

Sparks from logging engines also cause fires.
Cigar and cigarette stubs and burning matches carelessly thrown aside start many forest fires.

Occasionally fires are also maliciously set by evil-minded people.
The officers of the National Forests in the West have become very expert in running down the people who set incendiary fires.
They collect evidence at the scene of the fire, such as pieces of letters and envelopes, matches, lost handkerchiefs and similar articles.