THE GREATEST ENEMY OF THE FOREST--FIRE Our forests are exposed to destruction by many enemies, the worst of which is fire.

From 8,000,000 to 12,000,000 acres of forest lands annually are burned over by destructive fires.

These fires are started in many different ways.

They may be caused by sparks or hot ashes from a locomotive.

Lightning strikes in many forests every summer, particularly those of the Western States, and ignites many trees.