To show how efficient the forest rangers are in fighting fires, it is worthy of note that by their prompt actions, 80 per cent.

of these fires are confined to areas of less than ten acres each, while only 20 per cent.
spread over areas larger than ten acres.

Lightning causes from 25 to 30 per cent.

of the fires.

The remaining 70 or 75 per cent.
are classed as "man-caused fires," which are set by campers, smokers, railroads, brush burners, sawmills and incendiaries.