Real forest fires are not usually put out; men only try to limit them. A common method of limitation is to cut trenches thru the duff so that the fire cannot pass across, Fig. 108. In serious cases back fires are built on the side of the paths or roads or trenches toward the fire, in the expectation that the two fires will meet. In such cases great care has to be taken that the back fire itself does not escape. Small fires, however, can sometimes be beaten out or smothered with dirt and sand, since water is usually unavailable. [Illustration: Fig. 109. Fire Lane. Worcester Co., Mass. _U. S. Forest Service._] But "an ounce of prevention is worth a pound of cure." One of the best of these preventions is a system of fire lanes. Even narrow paths of dirt will stop an ordinary fire. Roads, of course, are still better. Systems of fire lanes, Fig. 109, are made great use of in Europe and British India. Belts of hardwood trees are also cultivated along railways, and to break up large bodies of conifers. If in lumbering, the slash were destroyed or even cut up so as to lie near the ground and rot quickly, many fires would be prevented. Some states, as New York, have a fairly well organized system of fire wardens, who have the authority to draft as much male help as they need at $2.00 a day to fight forest fires. Unfortunately "ne'er-do-wells" sometimes set fire to the woods, in order to "make work" for themselves. Much preventive work is also done by educating the public in schools and by the posting of the fire notices,[1] Fig. 110. [Illustration: Fig. 110. Look out for Fire. Rules and Laws.] DESTRUCTIVE LUMBERING. How the reckless and destructive methods of lumbering common in America came into vogue, is worth noting.[2] The great historical fact of the first half century of our country was the conquest of the wilderness. That wilderness was largely an unbroken forest. To the early settler, this forest was the greatest of barriers to agriculture. The crash of a felled tree was to him a symbol of advancing civilization. The woods were something to be got rid of to make room for farms, Fig. 111. In Virginia, for example, where the soil was soon exhausted by tobacco culture and modern fertilizers were unknown, there was a continual advance into the woods to plant on new and richer land. The forest was also full of enemies to the settler, both animals and Indians, and was a dreaded field for fire. So there grew up a feeling of hate and fear for the forest. [Illustration: Fig. 111. Forest Giving Place to Farm Land. North Carolina. _U. S. Forest Service._] More than that the forest seemed exhaustless. The clearings were at first only specks in the woods, and even when they were pushed farther and farther back from the seacoast, there was plenty of timber beyond.