. First book in physiology and hygiene . make bread hght is a small cake of flourin which there are some of these httle yeast these plants get into food materials that aremostly starch and sugar, they grow there and causethe food to sour, or ferment. \Vhile food is fer-menting, alcohol is forming in it. Rye, wheat, corn, and other grains that shouldhave been used in making food, are allowed to fer-ment to make the drink called whiskey. Barley isfermented to make beer, and grapes are fermentedto make wine. People of the United States spendmany millions of dollars more for strong dri


. First book in physiology and hygiene . make bread hght is a small cake of flourin which there are some of these httle yeast these plants get into food materials that aremostly starch and sugar, they grow there and causethe food to sour, or ferment. \Vhile food is fer-menting, alcohol is forming in it. Rye, wheat, corn, and other grains that shouldhave been used in making food, are allowed to fer-ment to make the drink called whiskey. Barley isfermented to make beer, and grapes are fermentedto make wine. People of the United States spendmany millions of dollars more for strong drink thanfor bread and meat. They spend more for whatwill hurt the body than for what will build it up. The Happmess of Health.—Ilowfine it is to havea good strong body! How clearly you can think,how much you can do, how well you look! Youneed no whip, or stimulant. All that you need isfresh air, proper and regular exercise, pure watergood food, and sunshine. — 70 — XXIII.—A PICTUKE LESSOX, Write a story based upon this pit^ XXIY.—A DECEITFUL FRIEND. A good farmer, you know, keeps his fields freeirom weeds. Yet there is a weed that farmersplant. Some farmers carefully tend a field of thisweed, and watch that neither worms nor insects eatholes in its broad green leaves. Why does the planter take such good care ofa patch of weeds? This weed cannot feed thehungry, as do wheat and corn. It cannot be usedfor clothing, as can cotton or flax. It cannot bemade into paper on which to print books. Yetmen will use less or poorer food in order to havemoney to buy leaves of this weed. They will buypoorer clothes and go without good books in orderto have tobacco to smoke. Why do they do it? Why Is Tobacco Used ? — One man says hesmokes to make his brain work faster. He saystobacco helps him think. Another man says hesmokes to quiet his brain and make him stop think-ing. Each supposes that tobacco is his are both deceived. The truth is that thisweed is an enemy to


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