A Handbook of Health Part 26

[Ill.u.s.tration: POISON IVY

It may be distinguished from woodbine by its _leaves in groups of three_ (not five), _glossy_ and _smooth-edged_ (not dull and saw-toothed); its _berries greenish-white_ (not blue).]

Another rather frequent and most disagreeable accident, which may happen to you when out in the woods, is poisoning by poison ivy. This is due to the leaves or twigs of a plant, which many of you probably know by sight, touching your hands or face. If you do not happen to know what poison ivy looks like, you had better get some one who knows to point out the shrub to you the next time you go into the woods, and then you should try to keep as far away from it as possible. It is sometimes called poison oak, but both these names are incorrect, as the shrub is really a kind of sumac. It takes its different names because it has the curious habit of either climbing like a vine, when it is called "ivy,"

or growing erect like a bush, or shrub, when it is called "oak."

All sorts of absurd stories are told about the leaves of the shrub being so poisonous that it is not safe to go within ten feet of it, when the dew is on it, or to walk past it when the wind is blowing from it toward you. But these are pretty nearly pure superst.i.tions, because it has been found that the substance in the leaves or bark of the shrub which poisons the skin is an oil, which is _non-volatile_, that is to say, will not give off any vapors to the air and, of course, cannot be dissolved in dew or other watery moisture. You must actually touch the leaves in order to be poisoned; but, unfortunately, this is only too easy to do without knowing it when you are scrambling through the woods or hunting for flowers or picking berries.

The remedy for poison ivy is a very simple one, and within the reach of anybody, and is as effective as it is simple. This is a thorough scrubbing of the part poisoned, just as soon as it begins to itch, with a nail-brush and soap and hot water. This makes the skin glow for a little while, but it washes out all the burning and irritating oil and, if used promptly, will usually stop the trouble then and there. It is a good idea if you know that you have touched poison ivy, or even if you have been scrambling about actively in woods or patches of brush where you know that the ivy is common, to give your hands a good was.h.i.+ng and scrubbing with sand or mud, if there is no soap at hand, in the first stream or pool that you come to. This will usually wash off the oil before it has had time to get through the natural protective coating of the skin.

Snake-bite is one of the rarest of all accidents and not one-fiftieth as dangerous as usually believed. Not more than one person in twenty bitten by a large rattlesnake will die, and only about two in a hundred bitten by small rattlers or by copperheads. The average poisonous snake of North America cannot kill anything larger than a rabbit, and any medium-sized dog can kill a rattlesnake with perfect safety. Our horror-stricken dread of snakes is chiefly superst.i.tion. Of those who die after being bitten by North American snakes, at least half die of acute alcoholic poisoning from the whiskey poured down their throats in pints; and another fourth, from gangrene due to too tight bandaging of the limb to prevent the poison from getting into the circulation, or from pus infections of the wound from cutting it with a dirty knife.

Alcohol is as great a delusion and fraud in snake-bite as in everything else; instead of being an antidote, it increases the poisoning by its depressing effect on the heart. If you should be bitten, throw a bandage round the limb, above the bite, and tighten as for a cut artery. Then make with a clean knife two free cuts, about half or three-quarters of an inch deep, through the puncture, one lengthwise and the other crosswise of the limb, and let it bleed freely. Then throw one or, if there be room, two or three other bandages round the limb, three or four inches apart, and tighten gently so as to close the surface veins by the pressure, without shutting off the flow in the arteries. After thirty or forty minutes loosen the first bandage to the same tightness and leave it so unless the heart weakens or faintness is felt, in which case tighten again. If this be done, there isn't one chance in a hundred of any serious result.

How to Avoid Drowning. In case of falling into the water, the chief thing to do is to try to keep calm and to _keep your hands below your chin_. If you do this and keep paddling, you will swim naturally, just as a puppy or a kitten would, even if you have never learned to swim. It is, however, pretty hard to remember this when you go splas.h.!.+ into the water. Everyone should learn to swim before he is twelve years old; and then in at least nine times out of ten, he will be safe if he fall overboard. Remember that, if you keep your mouth shut and your hands going below your chin, you can keep floating after a fas.h.i.+on, for some time; and in that time the chances are that help will reach you. If you can reach a log or apiece of board or the side of a boat, just cling quietly to that with one hand, and keep paddling with the other. Even if you can get hold of only quite a small limb or pole or piece of a box, by holding one hand on that and paddling with the other and kicking your feet, you will be able to keep floating a long time unless the water be ice cold. If you can manage to keep both your feet splas.h.i.+ng on top of the water and both hands going, you can swim several hundred yards.

[Ill.u.s.tration: Pressing out the air in the lungs.

Allowing the lungs to fill themselves.

THE NEW METHOD OF ARTIFICIAL BREATHING

Devised by a celebrated physiologist, Professor Schaefer of Edinburgh, and now being adopted by life-saving stations and crews everywhere.]

You may sometime be called upon to save another person from drowning. In such a case, as in every emergency, a cool head is the chief thing. Make up your mind just what you are going to do before you do _anything_,--then do it _quickly_! If no one is near enough to hear your shouts for help, and no boat is at hand, if possible throw, or push, to the one in the water a plank or board or something that will float, and he will instinctively grasp it. If you are thrown into the water with a person that can't swim, grasp his collar or hair, and hold him at arm's length, to prevent his dragging you under, until help arrives, or until you can tow him to safety.

Boys and girls, after they have learned to swim, may well practice rescuing each other, so as to be prepared for such accidents.

Artificial Breathing. The best way to revive a person who has been under water and is apparently drowned, is to turn him right over upon his chest on the ground, or other level surface, turning the face to one side so that the nose and mouth will be clear of the ground. Then, kneeling astride of the legs, as shown in the picture, place both hands on the small of the back and throw your weight forward, so as to press out the air in the lungs. Count three, then swing backward, lifting the hands, and allow the lungs to fill themselves with air for three seconds, then again plunge forward and force the air out of the lungs and again lift your weight and allow the air to flow in for three seconds. Keep up this swinging backward and forward about ten or twelve times a minute. This is the newest and by far the most effective way--in fact the only real way--of keeping up artificial breathing. It is very, very seldom that any one can be revived after he has been under water for more than five minutes,--indeed, after three minutes,--but this method will save all who can possibly be saved.

So perfect a subst.i.tute for breathing is it that if any one of you will lie down in this position upon his face, and allow some one else to press up and down on the small of his back after this fas.h.i.+on, ten or twelve times a minute, he will find that, without making any effort of his own to breathe, this pumping will draw enough air into his lungs to keep him quite comfortable for half an hour.

Don't waste any time trying to pour the water out of the lungs. As a matter of fact there is very little there, in drowned people. Don't waste any time in undressing, or warming or rubbing the hands or feet to start the circulation. Get this pendulum pump going and the air blowing in and out of the lungs, and if there is any chance of saving life this will do it; then you can warm and dry and rub the patient at your leisure after he has begun to breathe.

QUESTIONS AND EXERCISES

CHAPTERS I AND II

1. Look up in a dictionary the words physiology and hygiene. What does each mean? If you can, find the derivation of each. 2. Why should everyone learn about the human body? 3. How is the "man-motor" like an "auto"? Compare the fuel of each. 4. From what source do all the fuels get their force or energy? 5. How do plants get their fuel, or food?

6. What is meant in saying that man takes his food at second, or third, hand? 7. Why do we need a mouth? 8. Does a plant have a mouth? Where?

9. Draw a diagram showing how the food is carried into and throughout the body. 10. Describe the parts of the food tube through which it goes.

11. Tell how the body-motor uses bread as a fuel. How is its form changed before it can be used? 12. What are the salivary glands for? What work is done by their juice? 13. What other juices help to melt the bread?

14. Which foods need the most chewing? 15. How is the food carried down the food tube? 16. What is the appendix? Explain how it sometimes causes trouble. 17. How can you tell the difference between colic and appendicitis? 18. On which side is the appendix located? 19. In what parts of the food tube are (_a_) starch, (_b_) meats, (_c_) fat digested? 20. What causes constipation? How may it be avoided? 21. Is drinking water at meals hurtful? If so, how?

CHAPTER III

1. If we call the body an engine, what is the fuel? what is the smoke?

what are the ashes? 2. Why and how far can we rely upon our natural desires and appet.i.tes for food? 3. How should we choose our foods?

4. Name two serious faults that foods may have. 5. Why do we need a variety of foods? 6. What is meant by the term "fuel value of food"?

7. How can we roughly tell to which cla.s.s a food belongs or what its fuel value is? 8. Why should animal and vegetable foods be used together?

CHAPTER IV

1. Name and describe our most common meats. 2. When is pork a valuable food? 3. Why do we digest it slowly? 4. Why should we eat fish only once or twice a week? 5. What food-stuffs are found in milk? 6. Name some vegetables which contain protein food. 7. In planning a week's diet, how often would you use these vegetables, and why? 8. What is our greatest danger in eating meat? 9. Why is it dangerous to eat highly seasoned stews or hashes? 10. Should cheese be eaten in large amounts at a time? Why? 11. Describe the care taken at a good dairy. 12. Why is this necessary? 13. Why is dirty milk less nouris.h.i.+ng than clean milk?

CHAPTER V

1. Explain the name "starch-sugars." To which cla.s.s of fuel-food might we say that they belong? 2. Why are they cheaper than meat? 3. Why must these foods be ground and cooked? 4. Which is the better food, white or brown bread? Why? 5. Could we live on starch-foods alone? What is the reason of this? 6. In what foods do we find nitrogen? In what, carbon?

7. What is a "complete food"? Name some. 8. Why must the starchy foods be changed in the body into sugar, or glucose? 9. Name three ways by which bread is made "light." 10. What is yeast? 11. How is bread made?

12. Why should it be thoroughly baked? 13. What causes bread to become sour? 14. Name other important starchy foods. 15. Is sugar a valuable food? Why? 16. In what plants do we find it?

CHAPTER VI

1. Why are fats slow of digestion? 2. If they are so valuable as "coal foods," why do we not eat more of them at a meal? 3. Give some reasons for carrying fats as food supply on long voyages and expeditions. 4. In what forms are they best carried? 5. What makes up the emergency field-ration of the German army, and why? 6. What is the most valuable single fat, and why? 7. Name other fats in common use and describe their effects on digestion. 8. State the food values of bacon. 9. Why should nuts be eaten in moderate quant.i.ty only? 10. How do nuts compare in cost (_a_) with other proteins? (_b_) with other fats? 11. What is the peanut? 12. Why is it hard to digest? 13. What digestive juices "melt"

fats? 14. What is oleomargarine and how does it compare with b.u.t.ter?

CHAPTER VII

1. What is the necessity of fruits and vegetables in our dietary? Why especially in summer? 2. Give some idea of the food value of fruits as compared with bread and meat. 3. Name the most wholesome and useful fruits. 4. What is the food value of bananas? Why is it very important that they be eaten in moderation only? 5. What does (_a_) boiling and (_b_) drying do to fruits? 6. Why seal the jars of preserved fruits?

7. Why can you not eat as much jam, at one time, as raw fruit? 8. What disease is caused by scarcity of fresh vegetables or fruits? 9. Name some of the common vegetables and give their fuel values. 10. Why do we need with our meals the lighter green vegetables, although they have little nutritive value? 11. What vegetables contain starch, what sugar, and what digestible protein? 12. In what form is most of the nitrogen of vegetables?

CHAPTER VIII

1. What changes occur in food when it is cooked? Describe some of the changes. 2. What are the advantages of cooking meats and vegetables?

3. Why is it necessary that food should taste good? 4. What has cooking to do with the cost of food? 5. Why is time well spent in cooking food?

6. Describe the different methods of cooking food and tell advantages of each. 7. In what ways can you help make the table attractive and preserve health? 8. In what ways may food be made less digestible and wholesome by cooking? 9. In what way can fried food be made digestible?

10. What is the supposed economy of boiling? 11. Write out a good menu for each meal of the day.

CHAPTER IX

1. Why is water necessary in the body? 2. How does the body take in water other than by drinking it? 3. Why is this water sure to be pure?

4. Why is drinking water likely to be impure? 5. Where and when is water perfectly pure? 6. What are our chief sources of water-supply? 7. What is a well? a spring? a reservoir? 8. Which source of water-supply is safest? 9. What are the dangers of well water? 10. How can they be avoided? 11. What are the dangers of river water? 12. What is a filter and how does it work? 13. What makes water rise in a spring or an artesian well? 14. How may water suspected of being unhealthful be made safe to drink? 15. How is sewage disposed of? 16. How can it be kept out of the drinking water? 17. Why does it pay cities to spend large sums to secure pure water? 18. How can a reservoir be protected? 19. What are the risks of house filters? 20. How do bacteria help us in keeping our water-supply pure? 21. Does your city or town have a central source of water-supply? Where is it? 22. Visit the waterworks of your city or town and describe to the cla.s.s how the water is obtained, how prepared for use, and how distributed to buildings.

CHAPTER X

1. How can you prove that beverages are not real foods? 2. What is tea?

What is coffee? What are chocolate and cocoa? 3. Why are tea and coffee, if stewed, bad for the digestion? 4. Why is it better for you to let these drinks alone? 5. How is alcohol made? 6. How is wine made? beer?