THE TEETH 40 CHAPTER VII. EXERCISE 47 CHAPTER VIII. THE ART OF SWIMMING 49 CHAPTER IX. HOW TO TREAT DROWNED PERSONS 54 CHAPTER X. ANOTHER METHOD OF TREATMENT IN CASES OF ASPHYXIA, DROWNING, 62 CHLOROFORM, COAL-GAS, ETC. CHAPTER XI. THE MUSCLES 66 CHAPTER XII. REST AND POSTURE 70 CHAPTER XIII. PURE AIR, CLOTHING, ETC. 75 CHAPTER XIV. ACCIDENTS AND EMERGENCIES 82 CHAPTER XV. BRAIN, NERVES, SPINAL CORD, ETC. 91 CHAPTER XVI. SUNSTROKE AND POISONS 95 CHAPTER XVII. CIGARETTE SMOKING 100 CHAPTER XVIII. ALCOHOL 108 CHAPTER XIX. BONES, SKELETON, ETC. 117 CHAPTER XX. A CHEERFUL DISPOSITION 121 CHAPTER XXI. THE DIGESTIBILITY OF SOLID FOODS 125 TO THE MALE TEACHER. It is your bounden duty to instruct your pupils in the laws of health. If you fail to do so, you are not fit to be their teacher. The vices of cigarette smoking, of tobacco chewing, of beer and alcoholic drinking, threaten the very existence of the rising generation. You cannot be too earnest and persistent in impressing this truth upon the boys who look up to you for counsel. You need not be reminded that the most powerful teacher is your own example. Boys respect and admire manly vigor. You ought to be able to outrun, outjump, outthrow, outswim, outwrestle, outspar, and outplay, at all points, the largest and most active boy in school. Many a teacher, when he attempts to take part in an athletic game, becomes the laughing-stock of the youngest urchin, by reason of his flabby awkwardness.