A Treatise on Domestic Economy Part 5

The whole animal system is in a state of continual change and renovation. Food is constantly taken into the stomach, only a portion of which is fitted for the supply of the blood. All the rest has to be thrown out of the system, by various organs designed for this purpose.

These organs are,--the lungs, which throw off a portion of useless matter when the blood is purified; the kidneys, which secrete liquids that pa.s.s into the bladder, and are thrown out from the body by that organ; and the intestines, which carry off the useless and more solid parts of the food, after the lacteals have drawn off the chyle. In addition to these organs, the skin has a similar duty to perform; and as it has so much larger a supply of blood, it is the chief organ in relieving the body of the useless and noxious parts of the materials which are taken for food.

Various experiments show, that not less than a pound and four ounces of waste matter is thrown off by the skin every twenty-four hours. This is according to the lowest calculation. Most of those, who have made experiments to ascertain the quant.i.ty, represent it as much greater; and all agree, that the skin throws off more redundant matter from the body, than the whole of the other organs together. In the ordinary state of the skin, even when there is no apparent perspiration, it is constantly exhaling waste matter, in a form which is called _insensible perspiration_, because it cannot be perceived by the senses. A very cool mirror, brought suddenly near to the skin, will be covered, in that part, with a moisture, which is this effluvium thus made visible. When heat or exercise excites the skin, this perspiration is increased, so as to be apparent to the senses. This shows the reason why it is so important frequently to wash the entire surface of the body. If this be neglected, the pores of the skin are closed by the waste matter thrown from the body, and by small particles of the thin scarfskin, so that it cannot properly perform its duties. In this way, the other organs are made to work harder, in order to perform the labor the skin would otherwise accomplish, and thus the lungs and bowels are often essentially weakened.

Another office of the skin, is, to regulate the heat of the body. The action of the internal organs is constantly generating heat; and the faster the blood circulates, the greater is the heat evolved. The perspiration of the skin serves to reduce and regulate this heat. For, whenever any liquid changes to a vapor, it absorbs heat from whatever is nearest to it. The faster the blood flows, the more perspiration is evolved. This bedews the skin with a liquid, which the heat of the body turns to a vapor; and in this change, that heat is absorbed. When a fever takes place, this perspiration ceases, and the body is afflicted with heat. Insensible perspiration is most abundant during sleep, after eating, and when friction is applied to the skin. Perspiration is performed by the terminations of minute arteries in every part of the skin, which exude the perspiration from the blood.

The skin also performs another function. It is provided with a set of small vessels, called _absorbents_, which are exceedingly abundant and minute. When particular substances are brought in contact with the skin, these absorbents take up some portions and carry them into the blood. It is owing to this, that opium, applied on the skin, acts in a manner similar to its operation when taken into the stomach. The power of absorption is increased by friction; and this is the reason that liniments are employed, with much rubbing, to bruises and sprains. The substance applied is thus introduced into the injured part, through the absorbents. This shows another reason for frequent was.h.i.+ng of the skin, and for the frequent changes of the garment next the skin. Otherwise portions of the noxious matter, thrown out by the skin, are reabsorbed into the blood, and are slow but sure causes of a decay of the strength of the system.

The skin is also provided with small follicles, or bags, which are filled with an oily substance. This, by gradually exuding over the skin, prevents water from penetrating and injuring its texture.

The skin is also the organ of touch. This office is performed through the instrumentality of the nerves of feeling, which are spread over all parts of the skin.

This general outline of the construction of the human frame is given, with reference to the practical application of this knowledge in the various cases where a woman will be called upon to exercise her own unaided judgement. The application will be further pointed out, in the chapters on Food, Dress, Cleanliness, Care of the Sick, and Care of Infants.

CHAPTER VI.

ON HEALTHFUL FOOD.

The person who decides what shall be the food and drink of a family, and the modes of preparation, is the one who decides, to a greater or less extent, what shall be the health of that family. It is the opinion of most medical men, that intemperance in eating is the most fruitful of all causes of disease and death. If this be so, the woman who wisely adapts the food and cooking of her family to the laws of health, removes the greatest risk which threatens the lives of those under her care.

To exhibit this subject clearly, it will be needful to refer, more minutely, to the organization and operation of the digestive organs.

It is found, by experiment, that the supply of gastric juice, furnished from the blood, by the arteries of the stomach, is proportioned, not to the amount of food put into the stomach, but to the wants of the body; so that it is possible to put much more into the stomach than can be digested. To guide and regulate in this matter, the sensation called _hunger_ is provided. In a healthy state of the body, as soon as the blood has lost its nutritive supplies, the craving of hunger is felt, and then, if the food is suitable, and is taken in the proper manner, this sensation ceases, as soon as the stomach has received enough to supply the wants of the system. But our benevolent Creator, in this, as in our other duties, has connected enjoyment with the operation needful to sustain our bodies. In addition to the allaying of hunger, the gratification of the palate is secured, by the immense variety of food, some articles of which are far more agreeable than others.

This arrangement of Providence, designed for our happiness, has become, either through ignorance, or want of self-control, the chief cause of the various diseases and sufferings, which afflict those cla.s.ses who have the means of seeking a variety to gratify the palate. If mankind had only one article of food, and only water to drink, though they would have less enjoyment in eating, they would never be tempted to put any more into the stomach, than the calls of hunger required. But the customs of society, which present an incessant change, and a great variety of food, with those various condiments which stimulate appet.i.te, lead almost every person very frequently to eat merely to gratify the palate, after the stomach has been abundantly supplied, so that hunger has ceased.

When too great a supply of food is put into the stomach, the gastric juice dissolves only that portion which the wants of the system demand.

The remainder is ejected, in an unprepared state; the absorbents take portions of it into the system; and all the various functions of the body, which depend on the ministries of the blood, are thus gradually and imperceptibly injured. Very often, intemperance in eating produces immediate results, such as colic, headaches, pains of indigestion, and vertigo. But the more general result, is, a gradual undermining of all parts of the human frame; thus imperceptibly shortening life, by so weakening the const.i.tution, that it is ready to yield, at every point, to any uncommon risk or exposure. Thousands and thousands are pa.s.sing out of the world, from diseases occasioned by exposures, which a healthy const.i.tution could meet without any danger. It is owing to these considerations, that it becomes the duty of every woman, who has the responsibility of providing food for a family, to avoid a variety of tempting dishes. It is a much safer rule, to have only one kind of healthy food, for each meal, than the abundant variety which is usually met at the tables of almost all cla.s.ses in this Country. When there is to be any variety of dishes, they ought not to be successive, but so arranged, as to give the opportunity of selection. How often is it the case, that persons, by the appearance of a favorite article, are tempted to eat, merely to gratify the palate, when the stomach is already adequately supplied. All such intemperance wears on the const.i.tution, and shortens life. It not unfrequently happens, that excess in eating produces a morbid appet.i.te, which must constantly be denied.

But the organization of the digestive organs demands, not only that food be taken in proper quant.i.ties, but that it be taken at proper times.

It has before been shown, that, as soon as the food enters the stomach, the muscles are excited by the nerves, and the _peristaltic motion_ commences. This is a powerful and constant exercise of the muscles of the stomach, which continues until the process of digestion is complete.

During this time, the blood is withdrawn from other parts of the system, to supply the demands of the stomach, which is laboring hard with all its muscles. When this motion ceases, and the digested food has gradually pa.s.sed out of the stomach, Nature requires that it should have a period of repose. And if another meal be eaten, immediately after one is digested, the stomach is set to work again, before it has had time to rest, and before a sufficient supply of gastric juice is provided.

The general rule, then, is, that three hours be given to the stomach for labor, and two for rest; and in obedience to this, five hours, at least, ought to elapse between every two regular meals. In cases where exercise produces a flow of perspiration, more food is needed to supply the loss; and strong laboring men may safely eat as often as they feel the want of food. So, young and healthy children, who gambol and exercise much, and whose bodies grow fast, may have a more frequent supply of food. But, as a general rule, meals should be five hours apart, and eating between meals avoided. There is nothing more unsafe, and wearing to the const.i.tution, than a habit of eating at any time, merely to gratify the palate. When a tempting article is presented, every person should exercise sufficient self-denial, to wait till the proper time for eating arrives. Children, as well as grown persons, are often injured, by eating between their regular meals, thus weakening the stomach, by not affording it any time for rest.

In deciding as to _quant.i.ty_ of food, there is one great difficulty to be met by a large portion of the community. It has been shown, that the exercise of every part of the body is indispensable to its health and perfection. The bones, the muscles, the nerves, the organs of digestion and respiration, and the skin, all demand exercise, in order properly to perform their functions. When the muscles of the body are called into action, all the blood-vessels entwined among them are frequently compressed. As the arteries are so contrived, that the blood cannot run back, this compression hastens it forward, through the veins, towards that organ. The heart is immediately put in quicker motion, to send it into the lungs; and they, also, are thus stimulated to more rapid action, which is the cause of that panting which active exercise always occasions. The blood thus courses with greater celerity through the body, and sooner loses its nouris.h.i.+ng properties. Then the stomach issues its mandate of hunger, and a new supply of food must be furnished. Thus it appears, as a general rule, that the quant.i.ty of food, actually needed by the body, depends on the amount of muscular exercise taken. A laboring man, in the open fields, probably throws off from his skin ten times the amount of perspirable matter, which is evolved from the skin of a person of sedentary pursuits. In consequence of this, he demands a far greater amount of food and drink.

Those persons, who keep their bodies in a state of health, by sufficient exercise, can always be guided by the calls of hunger. They can eat when they feel hungry, and stop when hunger ceases; and then they will calculate exactly right. But the difficulty is, that a large part of the community, especially women, are so inactive in their habits, that they seldom feel the calls of hunger. They habitually eat, merely to gratify the palate. This produces such a state of the system, that they have lost the guide which Nature has provided. They are not called to eat, by hunger, nor admonished, by its cessation, when to stop. In consequence of this, such persons eat what pleases the palate, till they feel no more inclination for the article. It is probable, that three fourths of the women, in the wealthier circles, sit down to each meal without any feeling of hunger, and eat merely on account of the gratification thus afforded them. Such persons find their appet.i.te to depend almost solely upon the kind of food on the table. This is not the case with those, who take the exercise which Nature demands. They approach their meals in such a state that almost any kind of food is acceptable.

The question then arises, how are persons, who have lost the guide which Nature has provided, to determine as to the proper amount of food they shall take?

The only rules they can adopt, are of a general nature; founded on the principles already developed. They should endeavor to proportion their food to the amount of the exercise they ordinarily take. If they take but little exercise, they should eat but little food in comparison with those who are much in the open air and take much exercise; and their food should be chiefly vegetable, and not animal. But how often is it seen, that a student, or a man who sits all day in an office, or a lady who spends the day in her parlor and chamber, will sit down to a loaded table, and, by continuing to partake of the tempting varieties, in the end load the stomach with a supply, which a stout farmer could scarcely digest.

But the health of a family depends, not merely on the _quant.i.ty_ of food taken; but very much, also, on the _quality_. Some kinds of food are very pernicious in their nature, and some healthful articles are rendered very injurious by the mode of cooking. Persons who have a strong const.i.tution, and take much exercise, may eat almost any thing, with apparent impunity; but young children, who are forming their const.i.tutions, and persons who are delicate, and who take but little exercise, are very dependent for health, on a proper selection of food.

There are some general principles, which may aid in regulating the judgement on this subject.

It is found, that there are some kinds of food which afford nutriment to the blood, and do not produce any other effect on the system. There are other kinds, which are not only nouris.h.i.+ng, but _stimulating_, so that they quicken the functions of the organs on which they operate. The condiments used in cookery, such as pepper, mustard, and spices, are of this nature. There are certain states of the system, when these stimulants are beneficial; but it is only in cases where there is some debility. Such cases can only be pointed out by medical men. But persons in perfect health, and especially young children, never receive any benefit from such kind of food; and just in proportion as condiments operate to quicken the labors of the internal organs, they tend to wear down their powers. A person who thus keeps the body working under an unnatural excitement, _lives faster_ than Nature designed, and the sooner the const.i.tution is worn out. A woman, therefore, should provide dishes for her family, which are free from these stimulating condiments, and as much as possible prevent their use. It is also found, by experience, that animal food is more stimulating than vegetable. This is the reason why, in cases of fevers, or inflammations, medical men forbid the use of meat and b.u.t.ter. Animal food supplies chyle much more abundantly than vegetable food does; and this chyle is more stimulating in its nature. Of course, a person who lives chiefly on animal food, is under a higher degree of stimulus than if his food was chiefly composed of vegetable substances. His blood will flow faster, and all the functions of his body will be quickened.

This makes it important to secure a proper proportion of animal and vegetable diet. Some medical men suppose, that an exclusively vegetable diet is proved, by the experience of many individuals, to be fully sufficient to nourish the body; and bring, as evidence, the fact, that some of the strongest and most robust men in the world, are those, who are trained, from infancy, exclusively on vegetable food. From this, they infer, that life will be shortened, just in proportion as the diet is changed to more stimulating articles; and that, all other things being equal, children will have a better chance of health and long life, if they are brought up solely on vegetable food.

But, though this is not the common opinion of medical men, they all agree, that, in America, far too large a portion of the diet consists of animal food. As a nation, the Americans are proverbial for the gross and luxurious diet with which they load their tables; and there can be no doubt that the general health of the Nation would be increased, by a change in our customs in this respect. To take meat but once a day, and this in small quant.i.ties, compared with the common practice, is a rule, the observance of which would probably greatly reduce the amount of fevers, eruptions, headaches, bilious attacks, and the many other ailments which are produced or aggravated by too gross a diet.

The celebrated Roman physician, Baglivi, (who, from practising extensively among Roman Catholics, had ample opportunities to observe,) mentions, that, in Italy, an unusual number of people recover their health in the forty days of Lent, in consequence of the lower diet which is required as a religious duty. An American physician remarks, "For every reeling drunkard that disgraces our Country, it contains one hundred gluttons;--persons, I mean, who eat to excess, and suffer in consequence." Another distinguished physician says, "I believe that every stomach, not actually impaired by organic disease, will perform its functions, if it receives reasonable attention; and when we perceive the manner in which diet is generally conducted, both in regard to _quant.i.ty_ and _variety_ of articles of food and drink, which are mixed up in one heterogeneous ma.s.s,--instead of being astonished at the prevalence of indigestion, our wonder must rather be, that, in such circ.u.mstances, any stomach is capable of digesting at all."

In regard to articles which are the most easily digested, only general rules can be given. Tender meats are digested more readily than those which are tough, or than many kinds of vegetable food. The farinaceous articles, such as rice, flour, corn, potatoes, and the like, are the most nutritious, and most easily digested. The popular notion, that meat is more nouris.h.i.+ng than bread, is a great mistake. Good bread contains one third more nourishment than butcher's meat. The meat is more _stimulating_, and for this reason is more readily digested. A perfectly healthy stomach can digest almost any healthful food; but when the digestive powers are weak, every stomach has its peculiarities, and what is good for one, is hurtful to another. In such cases, experiment, alone, can decide, which are the most digestible articles of food. A person, whose food troubles him, must deduct one article after another, till he learns, by experience, which is the best for digestion. Much evil has been done, by a.s.suming that the powers of one stomach are to be made the rule in regulating every other.

The most unhealthful kinds of food, are those, which are made so by bad cooking; such as sour and heavy bread, cakes, pie-crust, and other dishes consisting of fat, mixed and cooked with flour; also rancid b.u.t.ter, and high-seasoned food. The fewer mixtures there are in cooking, the more healthful is the food likely to be.

There is one caution, as to the _mode_ of eating, which seems peculiarly needful to Americans. It is indispensable to good digestion, that food be well chewed and taken slowly. It needs to be thoroughly chewed, in order to prepare it for the action of the gastric juice, which, by the _peristaltic motion_, will be thus brought into universal contact with the minute portions. It has been found, that a solid lump of food requires much more time and labor of the stomach, than divided substances. It has also been found, that, as each bolus, or mouthful, enters the stomach, the latter closes, until the portion received has had some time to move around and combine with the gastric juice; and that the orifice of the stomach resists the entrance of any more, till this is accomplished. But, if the eater persists in swallowing fast, the stomach yields; the food is then poured in more rapidly than the organ can perform its duty of digestion; and evil results are sooner or later developed. This exhibits the folly of those hasty meals, so common to travellers, and to men of business, and shows why children should be taught to eat slowly.

After taking a full meal, it is very important to health, that no great bodily or mental exertion be made, till the labor of the stomach is over. Intense mental effort draws the blood to the head, and muscular exertions draw it to the muscles; and in consequence of this, the stomach loses the supply which it requires when performing its office.

When the blood is thus withdrawn, the adequate supply of gastric juice is not afforded, and indigestion is the result. The heaviness which follows a full meal, is the indication which Nature gives of the need of quiet. When the meal is moderate, a sufficient quant.i.ty of gastric juice is exuded in an hour, or an hour and a half; after which, labor of body and mind may safely be resumed.

When undigested food remains in the stomach, and is at last thrown out into the bowels, it proves an irritating substance, producing an inflamed state in the lining of the stomach and other organs. The same effect is produced by alcoholic drinks.

It is found, that the stomach has the power of gradually accommodating its digestive powers to the food it habitually receives. Thus, animals, which live on vegetables, can gradually become accustomed to animal food; and the reverse is equally true. Thus, too, the human stomach can eventually accomplish the digestion of some kinds of food, which, at first, were indigestible.

But any changes of this sort should be gradual; as those which are _sudden_, are trying to the powers of the stomach, by furnis.h.i.+ng matter for which its gastric juice is not prepared.

In regard to the nature of the meals prepared, the breakfast should furnish a supply of liquids, because the body has been exhausted by the exhalations of the night, and demands them more than at any other period. It should not be the heartiest meal, because the organs of digestion are weakened by long fasting, and the exhalations. Dinner should be the heartiest meal, because then the powers of digestion are strengthened, by the supplies of the morning meal. Light and amusing employments should occupy mind and body for an hour or more after a full meal.

But little drink should be taken, while eating, as it dilutes the gastric juice which is apportioned to each quant.i.ty of food as it enters the stomach. It is better to take drink after the meal is past.

Extremes of heat or cold are injurious to the process of digestion.

Taking hot food or drink, habitually, tends to debilitate all the organs thus needlessly excited. In using cold substances, it is found that a certain degree of warmth in the stomach is indispensable to their digestion; so that, when the gastric juice is cooled below this temperature, it ceases to act. Indulging in large quant.i.ties of cold drinks, or eating ice-creams, after a meal, tends to reduce the temperature of the stomach, and thus to stop digestion. This shows the folly of those refreshments, in convivial meetings, where the guests are tempted to load the stomach with a variety, such as would require the stomach of a stout farmer to digest, and then to wind up with ice-creams, thus destroying whatever ability might otherwise have existed, to digest the heavy load. The fittest temperature for drinks, if taken when the food is in the digesting process, is blood heat. Cool drinks, and even ice, can be safely taken at other times, if not in excessive quant.i.ty. When the thirst is excessive, or the body weakened by fatigue, or when in a state of perspiration, cold drinks are injurious. When the body is perspiring freely, taking a large quant.i.ty of cold drink has often produced instant death.

Fluids taken into the stomach are not subject to the slow process of digestion, but are immediately absorbed and carried into the blood. This is the reason why drink, more speedily than food, restores from exhaustion. The minute vessels of the stomach inhale or absorb its fluids, which are carried into the blood, just as the minute extremities of the arteries open upon the inner surface of the stomach, and there exude the gastric juice from the blood.

When food is chiefly liquid, (soup, for example,) the fluid part is rapidly absorbed. The solid parts remain, to be acted on by the gastric juice. In the case of St. Martin,[F] in fifty minutes after taking soup, the fluids were absorbed, and the remainder was even thicker than is usual after eating solid food. This is the reason why soups are deemed bad for weak stomachs; as this residuum is more difficult of digestion than ordinary food. In recovering from sickness, beef-tea and broths are good, because the system then demands fluids to supply its loss of blood.

Highly-concentrated food, having much nourishment in a small bulk, is not favorable to digestion, because it cannot be properly acted on by the muscular contractions of the stomach, and is not so minutely divided, as to enable the gastric juice to act properly. This is the reason, why a certain _bulk_ of food is needful to good digestion; and why those people, who live on whale oil, and other highly-nouris.h.i.+ng food, in cold climates, mix vegetables and even sawdust with it, to make it more acceptable and digestible. So, in civilized lands, bread, potatoes, and vegetables, are mixed with more highly-concentrated nourishment. This explains why coa.r.s.e bread, of unbolted wheat, so often proves beneficial. Where, from inactive habits, or other causes, the bowels become constipated and sluggish, this kind of food proves the appropriate remedy. One fact on this subject is worthy of notice. Under the administration of William Pitt, for two years or more, there was such a scarcity of wheat, that, to make it hold out longer, Parliament pa.s.sed a law, that the army should have all their bread made of unbolted flour. The result was, that the health of the soldiers improved so much, as to be a subject of surprise to themselves, the officers, and the physicians. These last came out publicly, and declared, that the soldiers never before were so robust and healthy; and that disease had nearly disappeared from the army. The civic physicians joined and p.r.o.nounced it the healthiest bread; and, for a time, schools, families, and public inst.i.tutions, used it almost exclusively. Even the n.o.bility, convinced by these facts, adopted it for their common diet; and the fas.h.i.+on continued a long time after the scarcity ceased, until more luxurious habits resumed their sway. For this reason, also, soups, gellies, and arrow-root, should have bread or crackers mixed with them.

We thus see why children should not have cakes and candies allowed them between meals. These are highly-concentrated nourishments, and should be eaten with more bulky and less nouris.h.i.+ng substances. The most indigestible of all kinds of food, are fatty and oily substances; especially if heated. It is on this account, that pie-crust, and articles boiled and fried in fat or b.u.t.ter, are deemed not so healthful as other food.

The following, then, may be put down as the causes of a debilitated const.i.tution, from the misuse of food. Eating _too much_, eating _too often_, eating _too fast_, eating food and condiments that are _too stimulating_, eating food that is _too warm_ or _too cold_, eating food that is _highly-concentrated_, without a proper admixture of less nouris.h.i.+ng matter, and eating food that is _difficult of digestion_.

FOOTNOTE:

[F] The individual here referred to,--Alexis St. Martin,--was a young Canadian, of eighteen years of age, of a good const.i.tution, and robust health, who, in 1822, was accidentally wounded by the discharge of a musket, which carried away a part of the ribs, lacerated one of the lobes of the lungs, and perforated the stomach, making a large aperture, which never closed; and which enabled Dr. Beaumont, (a surgeon of the American army, stationed at Michilimackinac, under whose care the patient was placed,) to witness all the processes of digestion and other functions of the body, for several years. The published account of the experiments made by Dr. B., is highly interesting and instructive.