"21. Keep matches in a closed metallic box.
"22. Have your horses rough-shod as soon as the ground freezes.
"23. When feeling dizzy or seasick, lie down.
"24. Do not close the damper of your stove too early. Better waste coal than run the risk of suffocation by gas.
"25. When climbing a ladder, look up and not down.
"26. In railroad traveling take the center of the car, and the middle car of the train, for safety.
"27. Eat only pure food, drink only pure liquids, think only pure thoughts, and keep your blood pure.
"28. In going through dry woods or over prairies do not smoke or cast matches about carelessly. There should be laws against this often wanton destruction of property.
"29. Look out for spontaneous ignition of oily rags, oil-painted canvas rolled up, wet iron filings.
"30. In entering mines not used, always try for gas before venturing into them.