Rocky Mountain maple (_Acer glabrum_).—Usually a shrub, but frequently 20 to 30 feet high. Paired opposite buds, 3 to 5 lobed leaves, dark reddish-brown bark, and paired, winged seed. Leaves 3 to 5 inches in diameter, opposite each other. Boxelder (_Acer negundo_).—Compound leaves with 3 to 5, rarely 7, leaflets, pale-gray or light-brown bark, and paired, winged seeds, which ripen in the autumn. Compound leaves opposite each other. Hawthorn (_Crataegus sp._).—Usually a shrub; dark scaly bark; leaves simple and alternate; fruit small, fleshy, and in clusters. Armed with sharp spines. _Six Rules for Health Protection_ 1. PURIFICATION.—Mountain streams will not purify themselves in a few hundred feet. Boil or chlorinate all suspected water. 2. GARBAGE.—Burn or bury all garbage, papers, tin cans, and old clothes. 3. EXCRETIONS.—Bury a foot deep all human excretions, at least 200 feet from streams, lakes, or springs. 4. WASHINGS.—Do not wash soiled clothing, utensils, or bodies in streams, lakes, or springs. Use a container and throw dirty water on the ground away from the water supply. 5. TOILETS.—Use public toilets where available. They are properly located. Toilets should be at least 200 feet from streams and not in gulches. 6. OBSERVE LAWS.—Observe the rules and endeavor to have others do the same. National and State laws impose heavy penalties for health-law violations. Report all violations or insanitary conditions (including dead animals) to the nearest health officer or Forest Service officer. _Six Rules for Prevention of Forest Fires_ 1. MATCHES.—Be sure that your match is out. Break it in two before you throw it away. 2. TOBACCO.—Be sure that pipe ashes and cigar or cigarette stubs are dead before throwing them away. Never throw them into brush, leaves, or needles. Do not smoke while traveling through the woods. 3. MAKING CAMP.—Before building a fire scrape away all inflammable material from a spot 5 feet in diameter. Dig a hole in the center and in it build your campfire. Keep your fire small. Never build it against trees or logs or near brush. Where available, use grates and stoves which have been provided. 4. BREAKING CAMP.—Never break camp until your fire is out—DEAD OUT. Use water where available. 5. BRUSH BURNING.—Never burn slash or brush in windy weather or while there is the slightest danger that the fire will get away. 6. HOW TO PUT OUT A CAMPFIRE.—Stir the coals while soaking them with water. Turn small sticks and drench both sides. Wet ground around the fire. Be sure that the last spark is dead. MONTEZUMA NATIONAL FOREST COLORADO 1939