Beer, Ale, and Cider. If the yeast germ be set to work in a pulp or mash of crushed barley or wheat, the starch of which has been partly turned into sugar by malting, it breaks up the sugar into alcohol and carbon dioxid. When it has brewed enough of the starch to produce somewhere from four to eight per cent of alcohol, then the liquid, which still contains about three or four per cent of a starch-sugar called _maltose_, is called beer, or ale. It is usually flavored with hops to give it a bitter taste and make it keep better. If the same process be carried out in apple juice, we get the well known hard cider with its biting taste.
Whiskey, Brandy, and Rum. When left to itself, the process of fermentation in most of these sugary or starchy liquids will come to a standstill after a while, because the alcohol, when it reaches a certain strength in the liquid, is, like all other toxins, or poisons produced by germs, a poison also to the germ that produces it. The yeast-bacteria probably produce alcohol as a poison to kill off other germs which compete with them for their share of the sugar or starch. So even the origin of this curious drug-food shows its harmful character. We should hardly pick out the poison produced by one germ to kill another germ as likely to make a useful and wholesome food.
[Ill.u.s.tration: PROPORTION OF ALCOHOL
IN LIGHT WINE IN BEER IN WHISKEY
The liquid shows what part of a tumblerful of each is alcohol.]
If man had been content to leave this fermentation process to nature, it is probable that many of the worst effects of alcohol would never have been heard of. But these lighter forms of alcoholic drinks did not satisfy the unnatural cravings which they had themselves created. Some people never can leave even bad-enough alone. So man, with an ingenuity which might have been much better used, sought a way of getting a liquor which would contain more alcohol than nature, unaided, could be made to brew in it. A little experimenting showed that the alcohol in fermenting juices was lighter than water; so that by gently heating the fermenting ma.s.s, the alcohol would evaporate and pa.s.s off as vapor, with a little of the steam from the water. Then, by catching this vapor in a closed vessel and pouring cold water over the outside of the vessel, it could be condensed again in the form of a clear, brownish fluid of burning taste, containing nearly fifty per cent of alcohol, instead of the original five or six.
This evaporated or distilled mixture of alcohol and water, if made from a mash of corn, wheat, rye, or potatoes, is called whiskey; if from fruit-juice, brandy. A similar liquor, made out of fermented rice, is known as _arrack_ in India, or _sake_ in j.a.pan; and the liquor made from fermented mola.s.ses is called rum.
Alcohol not a True Food, but a Drug. The much disputed question as to whether alcohol is a food or not, is really of little or no practical importance. It is quite true, as might be expected, from its close relation to sugar and the readiness, for instance, with which it will burn in an alcohol lamp or stove, that alcohol, in small amounts, is capable of being burned in the body, thus giving it energy. This may give it a certain limited value in some forms of sickness, as, for instance, in certain fevers and infections, when the stomach does not seem to be able to digest food. But here it acts as a medicine rather than as a true food and, like all other medicines, should be used only under skilled medical advice and control. For practical purposes, any trifling food value it may have is more than offset by its later poisonous and disturbing effects and, secondly, by its enormous expensiveness.
The greatest amount of alcohol that could be consumed in the body at all safely would barely supply one-tenth of the total fuel value needed; and if any one were to attempt to supply the body with energy by the use of alcohol, he would be blind drunk before he had taken one-third of the amount required. From the point of view of expense alone, to take alcohol for food is like killing buffalos for their tongues and letting the rest of the carca.s.s go to waste, as the Indians and pioneer hunters of the plains used to do. It never has more than a fraction of the food value of the grain or fruit out of which it was made; and the amount of nutriment that it contains costs ten times as much as it would in any of the staple foods.
Moreover, when it is taken with an ordinary supply of food, it is found that, for every ounce of alcohol burned in the body, a similar amount of the other food is prevented from being consumed, and probably goes to waste, owing to the harmful effects of alcohol upon digestion.
Therefore, to talk of alcohol as a food is really absurd.
The Effect of Alcohol on Digestion. It has been urged by some that alcohol increases the appet.i.te, and enables one to digest larger amounts of food. The early experiments seemed to support this claim by showing that alcohol, well diluted, and in moderate amounts, increased appet.i.te and the flow of the gastric juice. When the experiments were carried a little further, however, it was clearly shown that its presence in the stomach and intestines, in such amounts as would result from a gla.s.s of beer, or one or two gla.s.ses of claret-wine with a meal, interfered with the later stages of digestion, so that the later harmful effects overbalanced any earlier good effects.
Its Effect on the Temperature of the Body. Another claim urged in its favor was that it warmed the body and protected it against cold. It ought to have been easy for any one with a sense of humor to judge the value of this claim by the fact that it was equally highly commended by its users as a means of keeping them cool in hot weather. Its supposed effects in the case of both heat and cold were due to the same fact: it deadened the nerves for a time to whatever sense of discomfort one might then be suffering from, but made no change whatever in the condition of the body that caused the discomfort. Any drug which has this deadening effect on the nerves is called a narcotic; and it is in this cla.s.s that alcohol belongs, together with the stronger narcotics, _opium_, _chloroform_, _ether_, and _chloral_.
In fact, it was quickly found in the bitter school of experience that alcohol, though producing an apparent glow of warmth for the time, instead of increasing our power to resist cold, rapidly and markedly lessens it; so that those who drink heavily are much more likely to die from cold and exposure than those who let alcohol alone. Nowadays, Arctic explorers, explorers in the tropics, officers of armies upon forced marches, and those who have to train themselves for the most severe strains on their powers of endurance, all bear testimony to the fact that the use of alcohol is harmful instead of helpful under these conditions, and that it is not for a moment to be compared to real foods, like meat, sugar, or fat.
Its Effects on Working Power. Then it was claimed that alcohol increased the working power of the body; that more work and better work would be done by men at hard labor, if a little beer, or wine, was taken with their meals. Indeed, most of those who take alcohol believe that they work faster and better, and with less effort with it than without it. But the moment that this _feeling_ of increased power and strength was submitted to careful tests in the laboratory and in the workshop, it was found that instead of _more_ being accomplished when alcohol was taken, even in very moderate amounts, _less_ was accomplished by from six to twelve per cent. The false sense of increased vigor and power was due to the narcotic power of alcohol to deaden the sensations of fatigue and discomfort.
It was discovered long ago, almost as soon as men began to put themselves into training for athletic feats or contests, that alcohol was not only useless, but very injurious. Any champion who, on the eve of a contest, "breaks training" by "taking a drink," knows that he is endangering his record and giving his compet.i.tors an advantage over him.
Its Deadening Effect. In short, we must conclude that the so-called stimulating effects of alcohol are really due to its power of deadening us to sensations of discomfort or fatigue. Its boasted power of making men more "sociable" by loosening their tongues is due to precisely the same effect: it takes off the balance-wheels of custom, reserve, and propriety--too often of decency, as well. This is where the greatest and most serious danger of alcohol comes in, that even in the smallest doses, it begins to deaden us both mentally and morally, and thus lessens our power of control. This loss of control steadily increases with each successive drink until finally the man, completely under the influence of liquor, reaches a stage when he can neither think rationally nor speak intelligently, nor even walk straight or stand upright--making the most humiliating and disgusting spectacle which humanity can present.
Harmful Effects on the Body. All doctors and scientists and thoughtful men are now practically agreed: First, that alcohol in excess is exceedingly dangerous and injurious, and one of the most serious enemies that modern civilization has to face.
Second, that even in the smallest doses, as a deadener of the sense of discomfort, it blinds the man who takes it to the harm it is doing and, as soon as its temporary comforting effects begin to pa.s.s off, naturally leads its victim to resort to it again in increasing doses. In fact, unlike a true food which quickly satisfies, the use of alcohol too often creates an appet.i.te that grows by what it feeds on, and is never satisfied. For every natural appet.i.te or instinct, nature provides a check; but she provides none for tastes that must be acquired. The last man to find out that he is taking too much is the drinker himself. Taken first to relieve discomfort, its own poisonous after-effects create a new and permanent demand for it.
The third point on which agreement is almost unanimous among scientists and physicians is that, as will be seen in later chapters, there are a considerable number of diseases of the liver, of the heart and blood vessels, of the kidneys, and of the nervous system, which are produced by, or almost always a.s.sociated with, alcohol. There are, for instance, three different kinds of alcoholic insanity. It is true that these disease-changes most commonly occur in the tissues of those who use alcohol to excess; and it is also probably true that what the alcoholic poison is doing in these cases, is picking out the weak spots in the body and the weaker individuals in the community. Even the strongest and best of us have our little weaknesses of digestion, of nerves, and of disposition that we know of, as well as others that we are not acquainted with. And what is the use of running the risk of having these picked out and made worse in this dangerous and unpleasant manner, just for the sake of a little temporary indulgence?
Moreover, while it is admitted that most of these harmful effects of alcohol are produced by its use in excess, it is daily becoming a more and more difficult matter to decide just how much is "excess." It certainly differs widely in different individuals, and in different organs and parts in the same body. An amount of alcohol which one man might possibly take without harm may greatly injure another; and its frequent use, though it does not produce the slightest sign of intoxication, or even of discomfort, or headache, may be slowly and fatally damaging the cells of the liver or kidney. In fact, the conviction is growing among scientists that alcohol does the greatest harm in this slow, insidious way without its user"s realizing it in any way until too late to break the fearful habit.
It may even be perfectly true that alcohol seriously injures not more than ten or fifteen per cent of those who take it in small quant.i.ties; but how can you tell whether you, or your liver, or kidney, or nerve cells, belong in the ten per cent or the ninety per cent cla.s.s? On general principles, it would hardly seem worth while making the test simply for the sake of finding out. You never can _quite_ tell what alcohol has done to you, until the _post mortem_ (after death) examination--and then the question will not interest you very much.
Its Effect upon Character. Just as alcohol deadens the body and the senses, especially the higher ones--so it has a terrible effect upon the mental and moral sides of our natures. The results of the use of alcohol are so well known that it is unnecessary here to either describe or picture them. All that is needed is to keep our eyes open upon the street, and read the police reports. What good effects upon man"s better nature has alcohol to show as an offset for this dreadful tendency to bring out the worst and lowest in man?
Increasing Knowledge of the Bad Effects of Alcohol is Decreasing its Use. It is most impressive that almost everything we have found out about alcohol in the short time that we have been studying it carefully has been to its discredit. Fifty years ago beer and wine, all over the civilized world, were commonly regarded as foods. Now they are not considered true foods, but harmful beverages. Fifty years ago alcohol was believed to improve the digestion and increase the appet.i.te. Now we know that it does neither. It was believed to increase working power, and has now been clearly shown to diminish it. It was supposed to increase the thinking power and stimulate the imagination, and now we know that it dulls and muddles both.
Fifty years ago it was freely used as medicine for all sorts of illnesses, both by doctor and patient; it was supposed to stimulate the heart, to sustain the strength, to increase the power of the body to resist disease, and to sustain and support life in emergencies. Now we know that practically all these claims are unfounded, and that such value as it has in medicine is chiefly as a narcotic, as a deadener of the sense of discomfort. As a result, it is already used in medicine only about one-fourth as much as it was fifty years ago, and its use is still steadily decreasing.
Fifty years ago, in this country, in England, and on the continent of Europe, farm laborers and servants living in the house, expected so many pints or quarts of ale or beer a day, as part of their regular food rations, just as they now would expect milk or tea or coffee. It was only a few years ago that the great steamship companies stopped issuing _grog_, or raw spirits, to the sailors in their employ, as part of their daily ration, because they at last came to realize how harmful were its effects. And a score of similar instances could be mentioned, showing that the unthinking and general use of alcohol as a beverage at our tables is steadily and constantly diminishing. Great temperance societies are springing up in this and other civilized countries and are having a powerful influence in showing the harm of the use of alcohol and in inducing people to abstain from using it.
This movement is only fairly started, but is being hastened by such practical and important influences as the experience of many of the great business corporations, such as railroads, steamship companies, insurance companies, banks, and trust companies, which support the findings of science against alcohol in almost every respect. On account of the manner in which alcohol unconsciously dulls the senses and blurs the judgment, these companies began long ago weeding out from their employ all men who were known to drink to excess; then they began to reject those who were likely to occasionally over-indulge, or take it too freely; and now, finally, many of them, particularly the railway and steamship companies, will not employ--except in the lowest and poorest paid cla.s.ses of their service--and will not promote to any position which puts men in charge of human life and limb, those who use alcohol in any form or amount.
Nearly all the captains, for instance, of our great trans-atlantic liners, whose duties in storm or fog keep them on the bridge on continuous duty for forty-eight, sixty, and even seventy-two hours at a stretch, with thousands of lives depending upon their courage and their judgment, are total abstainers. And while twenty-five years ago they used to think that they could not go through these long sieges of storm duty without plenty of wine or whiskey, they now find that they are far better off without any alcoholic drink.
Another powerful force in the same direction is our insurance companies, practically all of whom now will refuse to insure any man known habitually to use alcohol to excess, because where lists have been kept of their policy-holders showing which were users of alcohol and which total abstainers, their records show that the death rate among the users of alcohol is some twenty per cent greater than among the total abstainers. A similar result has also been reached in the companies that insure against sickness, whose drinking members average nearly twice as many weeks of sickness during the year as the abstaining ones. So both of these two great groups of business corporations are becoming powerful agencies for the promotion of temperance.
Within fifty years from now the habitual use of alcohol will probably have become quite rare. It is already becoming "good form" among the best people not to drink; and the fashion will spread, as the bad effects of alcohol become more generally understood.
TOBACCO
Smoking, a Senseless Habit. Smoking is the curious act of drawing smoke into the mouth and puffing it out again. Why this custom should have become so widespread is even a greater puzzle than is the drinking of alcohol. In civilized countries at least, it is a custom of much more recent growth than "drinking," as it was introduced into Europe from America by the early explorers, notably those sent out by Sir Walter Raleigh. As tobacco-smoke is neither a solid nor a liquid, but only a gas, no one could even pretend that it is of any value, either as food or drink. All that can be said of smoking, even by the most inveterate smoker, is that it is a habit, of no possible use or value to body or mind, and of great possibilities of harm.
Another singular thing about smoking is that its effects vary so greatly according to the individual who practices it, that scarcely any two smokers can agree as to the exact reason why they smoke, except that in some vague way smoking gives them pleasure. The only thing that they do agree upon is that they miss it greatly, and crave it keenly whenever they stop it. The only thing that stands out clearly about smoking is that while it does no good, and does not even give one definite and uniform kind of pleasure, it does form a powerful and over-mastering habit, which is exceedingly difficult to break, and develops a craving which can be satisfied only by continuing, or returning, to it.
It is Very Difficult to Break the Habit of Smoking. As a matter of practical experience, not one smoker in fifty who tries to swear off ever succeeds in doing so permanently. Why then should any one form a habit, which is of no benefit whatever, which is expensive, unpleasant to others, and which may become exceedingly injurious, simply for the sake of saddling one"s self with a craving which will probably never be got rid of all the rest of one"s life? The strongest and most positive thing that a smoker can say about his pipe, or cigar, or cigarette, is that he could not get along without it; and he will usually add that he wishes he had never begun to use it. You are better off in every way by letting tobacco strictly alone, and never teaching yourself to like it.
Tobacco is Not a Natural Taste. As might be expected, in the case of such an utterly useless drug, we have no natural liking or instinct for it; and the taste for it has to be acquired just as in the case of alcohol, only as a rule with greater difficulty and with more painful experiences of headache, nausea, and other discomforts.
[Ill.u.s.tration: A BOARD OF HEALTH EXAMINATION FOR WORKING PAPERS
The Board of Health of the City of New York requires that all children between the ages of fourteen and sixteen shall have certificates of good health before they can be employed in business. Any employer who hires a child without such a certificate is liable to a heavy fine. This law is to protect the health of both the worker and the public.]
Nicotine, a Powerful Poison. Tobacco contains and depends largely for its effects upon considerable amounts of a substance called _nicotine_.
This is a powerful poison, even in very small doses, with only feeble narcotic, or pain-deadening, powers; but fortunately, the larger part of it is destroyed in the process of burning. Enough, however, is carried over in the smoke, or absorbed through the b.u.t.t of the cigar or cigarette, or the mouth-piece of the pipe, to injure the nervous system, especially in youth. As will be seen in the chapter upon the "Care of the Heart," it especially attacks the nerves supplying the heart, and is thus most harmful to growing boys.
On account of its injurious effects upon the nerves of the heart, smoking has long been forbidden by trainers and coachers to all athletes who are training for a contest or race. In addition to its poisonous effects upon the nervous system, tobacco also does great harm to boys and young men by providing them with an attractive means of filling up their time and keeping themselves amused without either bodily or mental effort. The boy who smokes habitually will find it much easier to waste his time in day-dreams and gossip, and tends to become a loafer and an idler.
The Advantage that Non-Smokers have over Smokers. When both of these influences are taken together, it is little wonder that the investigations of Dr. Seaver, the medical director of Yale, showed that out of the 187 men in the cla.s.s of 1881, those not using tobacco during their college course had gained, over the users of tobacco, twenty-two per cent in weight, twenty-nine per cent in height, nineteen per cent in growth of chest, and sixty-six per cent in increase of lung capacity.
[Ill.u.s.tration: A TEST OF CLEAR HEAD AND STEADY NERVES
The boy who smokes cigarettes finds it increasingly difficult to obtain a position in a bank or other large commercial house.]
In the Amherst graduating cla.s.s for the same year, the non-users of tobacco had gained twenty-four per cent more in weight, thirty-seven per cent more in height, and forty-two per cent more in growth of chest than had the smokers. In lung capacity, the tobacco users had lost two cubic inches, while the abstainers had gained six cubic inches.
As a wet-blanket upon ambition, a drag upon development, and a handicap upon success in life, the cigarette has few equals and no superiors. The stained fingers and sallow complexion of the youthful cigarette smoker will generally result in his being rejected when applying for a position. The employer knows that the non-smoking boy is much more likely to succeed in his work and win his way to a position of trust and influence than is the "cigarette fiend." Especially in these days of sharp compet.i.tion, no boy can afford to contract a habit which will so handicap him in making his way as will the cigarette habit.
CHAPTER XI
THE HEART-PUMP AND ITS PIPE-LINE SYSTEM
THE BLOOD VESSELS
Where the Body Does its Real Eating. When once the food has been dissolved in the food-tube and absorbed by the cells of its walls, the next problem is how it shall be sent all over the body to supply the different parts that are hungry for it; for we must remember that the real eating of the food is done by the billions upon billions of tiny living cells of which the body is made up.