Table of Contents

A HANDBOOK OF INVALID COOKING

FOR THE USE OF NURSES IN TRAINING-SCHOOLS
NURSES IN PRIVATE PRACTICE
AND OTHERS WHO CARE FOR THE SICK

CONTAINING EXPLANATORY LESSONS ON THE PROPERTIES
AND VALUE OF DIFFERENT KINDS OF FOOD, AND RECIPES
FOR THE MAKING OF VARIOUS DISHES

BY

MARY A. BOLAND

INSTRUCTOR IN COOKING IN THE JOHNS HOPKINS
HOSPITAL TRAINING-SCHOOL FOR NURSES; MEMBER
OF THE AMERICAN PUBLIC HEALTH ASSOCIATION

 

PREFACE

In preparing the following pages for publication, it has been my object to present a collection of recipes and lessons on food, for the use of nurses. The idea was suggested by the need of such a book in the training-school of the Johns Hopkins Hospital. It is hoped that it will be found useful in other hospitals and schools where the teaching of the subject of food is receiving attention, and also to those who care for their own sick and invalid ones at home.

Part I—the explanatory lessons—includes general remarks on chemistry, lessons on the properties of the different classes of foods, and special articles on Air, Water, Milk, Digestion and Nutrition. Part II consists of recipes, menus of liquid, light, and convalescent's diet, and articles on Serving, Feeding of Children, and District Nursing.

In arranging the explanatory lessons, information has been drawn from many sources, but particularly from the works of Atwater and Parkes. It is the intention that these lessons be studied in connection with the practical work; they contain matter suggestive of that which it is necessary to understand in order that something may be known of the complex changes which take place in food in the various processes of cooking.

The recipes have been carefully chosen and perfected, some having been changed many times before final adoption. In most of them the quantities are small,—such amounts as would be required for one person,—but by multiplying or dividing the formulæ any quantity may be made, with uniform results.

Detailed descriptions have been given in order that those who know nothing of cooking may be able, by intelligently following the instructions, to make acceptable dishes. Repetition and similarity of arrangement will, it is hoped, serve to impress upon the mind certain points and principles.

In some instances the recipes are original, but for the most part the ideas have been gathered from lessons and lectures on cooking, and from standard books, among them Mrs. Lincoln's "Boston Cook Book." Generally the order in which each recipe has been written is the order in which the different ingredients should be put together. The proportions have been placed first, and separately from the description of the process, for greater convenience in using.

Valuable information for the chapter on the feeding of children was found in Uffelmann's "Hygiene of the Child."

I gratefully acknowledge the assistance of Drs. Simon Flexner and William D. Booker of the Johns Hopkins Hospital in reviewing, respectively, the explanatory lessons and the chapter on the feeding of children.

M. A. B.

Baltimore, Jan. 18, 1893.

 

CONTENTS

 

 

 

 

 

Introduction

Part I

Explanatory Lessons

 

PAGE

Preparation of Food

9

Chemical and Physical Changes

10

Elements

12

Air

14, 38

Fire

14

Composition of the Body

16

Principal Chemical Compounds in the Body

17

The Five Food Principles

18

Water

19

Protein

24

Fats

28

Carbohydrates

31

Mineral Matters

65

Milk

44

Digestion

49

Nutrition

53

Part II

Recipes

Beef-juice, Beef-tea, and Broths

75

Gruels

83

Mush and Porridge

90

Drinks

95

Jellies

120

Toast

128

Soups

134

Oysters

145

Eggs

153

Potatoes

161

Meats

168

Stews

185

Sweetbreads

188

Fish

191

Custards, Creams, Puddings, and Blanc-Mange

195

Salads

211

Ice-cream, Sherbets, and Ices

217

Cooked Fruits

225

Bread

232

Cake

246

Diet Lists or Menus for the Sick

254

Liquid Diet—Five Menus

254

Light Diet—Five Menus for Breakfast, Dinner, Supper, and Lunch

256

Convalescent's Diet—Eight Menus for Spring, Summer, Autumn, and Winter

260

Serving

Importance of Skill in Cooking the Things to be Served

267

Good Serving a Necessity for the Sick

268

Preparation of the Invalid's Tray

268, 270

Importance of Harmony of Colors in Dishes, Linen, and Flowers

269

Care of Dishes and Tray in Contagious Diseases

271

Tray Decoration

272

Variety, Intervals of Feeding, and Quantity of Food to be Given

273, 274

A Plan for the Preparation of an Invalid's Breakfast

278

The Feeding of Children

Ways in which a Child may be Supplied with Food

280

Artificial Feeding

280

Comparison of the Composition of Cow's and Human Milk

281

Buying, Care, and Sterilization of Cow's Milk

281, 284

Mellin's Food and other Attenuants

283, 290, 291

Predigestion

283, 284

Bacterial Poisons in Milk

285, 286

Apparatus for Sterilizing Milk

287

Care of Feeding-bottles

287

Use of Condensed Milk

288

Preserved Milk

289

Farinaceous Foods, Mellin's Food, Malted Milk, etc.

289, 290

Amount of Food for each Meal—Dilution of—Manner of Giving

293

Temperature of Food when Given, and Intervals of Feeding

294

General Rules for Feeding

294

For the First Week

295

After the First Week and until the Sixth Week

295

From the Sixth Week to the Sixth Month

296

From the Sixth to the Tenth Month

297

From the Tenth to the Twelfth Month

298

From the Twelfth to the Eighteenth Month

299

After Eighteen Months

299

Foods to be Carefully Avoided

300

District Nursing

District Nursing

301

To Make a Fire

302

To Wash Dishes

303

Sweeping and Dusting

303

Bills of Fare for Saturday, Sunday, Monday, and Tuesday:

In May

304-308

In September

308-310

In January

310-313

Literature

A List of Books on the Chemistry of Foods, Bacteriology, Nutrition, Health, Practical Cooking, and Allied Subjects, useful for Reference

313

Charts of the Composition of Various Foods for Use in a Cooking-school

314

Apparatus for Furnishing a Cooking-school

315

 

INTRODUCTION

The work of the nurse is to care for her patient, to watch, to tend, and to nurture him in such a way that he shall gain and maintain sufficient strength to overcome disease, that he may finally be restored to a state of health. Her greatest allies in this work consist in the proper hygienic surroundings of good air, warmth, cleanliness, and proper nourishment.

The most scrupulous cleanliness in the care and preparation of food is an important point in her work, and practically to appreciate this, some knowledge of bacteriology is necessary, for the various fermentative and putrefactive changes (often unnoticed) which take place in both cooked and uncooked foods are caused by the growth of microscopic forms of life. Most of us realize the necessity for removing all visible impurities, but that is not enough; we should also combat those unseen agents which are everywhere at work, in order that we may prevent their action upon food material or destroy the products of their growth. Often these products are of a poisonous nature, and cause grave physical disturbances when they occur in our foods. When such knowledge is more general, we shall have arrived at a state of progress in the care and preparation of foods not yet universally reached.

The indications at present are that nothing of importance will be done to change for the better the existing methods of housekeeping, until housekeepers are educated in the science of household affairs. They should comprehend (1) that the atmosphere is an actual thing; that it has characteristics and properties like other actual things; that it is a necessity of life, and may be made a medium for the transmission of disease; and that it is as necessary that it should be kept clean as the floor, the table, or the furniture; (2) that food is a subject which may be studied and mastered like any other subject; that the changes it undergoes in its care and preparation are governed by fixed laws; (3) they should have a knowledge of heat in order to appreciate the effects of temperature on different food materials, to regulate the ventilation of their houses, and to control fires wisely and economically; and (4) they should have some knowledge of bacteriology, that milk and water, flesh, fruit, and vegetables may be kept, or rendered, absolutely free from disease-giving properties, and that perfect cleanliness may be exercised in preparing all materials that enter the body as nutrients.

It is not the intention to imply that all micro-organisms produce injurious effects wherever they are found; on the contrary, they are as essential to man's existence as are the higher forms of life; but often they seriously, even fatally, interfere with that existence, and in order to discriminate and to combat the evil a knowledge of their ways and modes of life is essential.

A Harvard professor is credited with saying that no man could be a gentleman without a knowledge of chemistry; and forthwith all the students took to chemistry, for all wanted to be gentlemen. Would that somebody would authoritatively declare that no woman could be a lady without a knowledge of the chemistry of the household—what a glorious prospect would there be opened for the future health of the nation!

We read in history that after a grand medieval repast the bones and refuse of the feast were thrown under the table and left to decay. The scourges which have swept over Europe in past centuries we know, to-day, were not visitations of Providence, but were simply the result of natural causes, due to ignorance of all hygienic laws on the part of the people. Compared with the barbarians of old, in these matters, we are a civilized people; compared with the possibilities of the future, we are still little more than savages.

The ideal life is one in which there shall be no sickness except from accident or natural causes. When we have mastered the laws of hygiene, then will such life be possible. Meanwhile, with sickness always in our midst, we should keep the ideal ever before us, and endeavor by all means to restore suffering human beings to a perfect state of health. A sound body is a material thing, prosaically nourished by material substances, which produce just as exact results in its chemical physiology as if those substances entered into combination in the laboratory of the chemist. The cooking of food should be governed by exact laws which for the most part as yet remain undemonstrated. It is a foregone conclusion that many young women fail in their first attempts at cooking; that they do so is not surprising, for not only are their friends unable to teach them, but the majority of books on the subject furnish no intelligible aid.[1] The science of cookery is still in the empirical stage.

Even among experienced housekeepers there is not enough knowledge of the nature of foods and their proper combinations; the result is a great deal of unwholesome cookery and the consequent injury and waste which must follow. Dislike for the work is usually due to want of success, and failure is attributed to ill luck, poor materials, the fire, or any cause but the true one—which is ignorance of the subject. Of course good dishes cannot be made out of poor materials, but too often poor dishes are made out of good materials.

The systematic teaching of the subject of household affairs cannot fail of good results. Especially is this true in the case of the nurse, who will need at all times to exercise care and wisdom in the choice of food for the sick, to avoid the use of injurious substances, and to select that which is perfectly wholesome and suited to the needs and condition of each individual.

It may be said that most women can prepare a fairly satisfactory meal for those who are well, but very few are able to do the same for the sick.

Count Rumford says: "I constantly found that the richness or quality of a soup depended more upon the proper choice of ingredients than upon the quantity of solid nutrient matter employed; much more upon the art and skill of the cook than upon sums laid out in the market." This is equally true of other dishes than soup. The skill to develop the natural flavors of a food, to render it perfectly and thoroughly digestible, to convert it into a delicate viand, cannot be acquired in a haphazard way. Cooking cannot be done by guesswork. There are right and wrong methods in the kitchen as well as in the laboratory, and there is no doubt that the awakening interest in the subject of domestic science generally is neither an accident nor a whim, but the result of a necessity for better ways of living. We live different lives from those of our grandfathers before the days of the steam-engine, electricity, the telegraph, and the telephone. Now much more energy is needed to meet each day's demand than was required a hundred years ago, and so, much more nutriment is needed to sustain that energy. When the food does not supply the material to meet the demand, the whole being suffers.

A course of study in cooking taken by the nurses of a hospital, while they are still pupils, is valuable for their present and future work. A nurse with the information that such a course should give, will be able to care for the feeding of her patients more wisely,[2] will see the necessity for variety, will learn to avoid suspicious substances, such as fermented meat or fish, canned foods, etc., and will put forth every effort to secure that which is appetizing and wholesome, and suited to the needs of those in her care. She will more easily exercise patience and forbearance with the idiosyncrasies of the sick in regard to articles of diet, knowing that these are usually the symptoms of disease. The proper modes of caring for milk, eggs, oysters, and other perishable foods, the practice of economy in the use of wines, cocoa, and like costly substances, and an appreciation of the value of food materials in general, are some of the points which she will have learned.

She will not forget that cleanliness in the kitchen in the preparation of all food, and in the washing of dishes, towels, waste-pails, sinks, and all receptacles in which easily decomposing substances are kept, means protection against many evils. The little knowledge of bacteriology that it is possible to give in a course in cooking, will enable her to understand that many animal foods, such as oysters, fish, and lobsters, are extremely prone to decay, and, although apparently good, may have been the camping-ground of millions of organisms which have produced such changes in them as to render them suspicious articles of diet. She will, therefore, always endeavor to have such food alive if possible, or at least fresh, and to keep it in such conditions of temperature as shall preserve it in a wholesome state.

The actual practical knowledge of how a certain number of dishes should be made has, of course, its value; but it is not the only consideration which should enter into the teaching of cookery. Perhaps the most important point in all such work is the recognition in certain cases of the necessity for particular dishes, and the reasons for, and the value of, their ingredients. Why one kind of food is better for one person and a different kind for another is, without doubt, an essential point in all such study.

A system depleted by disease, exhausted by long-continued illness, is an exceedingly delicate instrument to handle. It requires the greatest wisdom and good judgment on the part of physician and nurse to restore a patient to health without a lingering convalescence. There is no doubt that the period of convalescence may be much shortened by the wise administration of food, and that the subsequent health of the patient may be either made or marred by the action of the nurse in this respect.

 

 

PART I

EXPLANATORY LESSONS

 


 

PART I

EXPLANATORY LESSONS

decorative separator

 

PREPARATION OF FOOD

Digestibility. There are comparatively few kinds of food that can be eaten uncooked. Various fruits, milk, oysters, eggs, and some other things may be eaten raw, but the great mass of food materials must be prepared by some method of cooking. All the common vegetables, such as potatoes, turnips, carrots, beets, and the different grains, such as rice, wheat, corn, oats, etc., neither taste good nor are easily digestible until their starch, cellulose, and other constituents have been changed from their compact indigestible form by the action of heat. Some one has spoken of cooking as a sort of artificial digestion, by which nature is relieved of a certain amount of work which it would be very difficult, if not impossible, for her to perform.

Flavors. The necessity of cooking to develop, or to create, a palatable taste is important. The flesh of fowl is soft enough to masticate, but only a person on the verge of starvation could eat it until heat has changed its taste and made it one of the most savory and acceptable of meats. Coffee also well illustrates this point. When coffee is green—that is, unbrowned—it is acrid in taste, very tough, even horny in consistency, and a decoction made from it is altogether unpleasant. But when it is subjected to a certain degree of heat, for a certain time, it loses its toughness, becomes brittle, changes color, and there is developed in it a most agreeable flavor. This flavoring property is an actual product of the heat, which causes chemical changes in an essential oil contained in the bean. Heat not only develops but creates flavors, changing the odor and taste as well as the digestibility of food.

Effects of Cold. Some foods are better for being cold; for example, butter, honey, salads, and ice-cream. Sweet dishes as a rule are improved by a low temperature. The flavor of butter is very different and very much finer when cold than when warm. It is absolutely necessary to keep it cool in order to preserve the flavor.

 

CHEMICAL AND PHYSICAL CHANGES

Chemical Changes. Since many of the changes which cooking produces in the different food materials are of a chemical nature, it is well to consider what constitutes a chemical process. This idea may perhaps be best conveyed by a few experiments and illustrations, the materials for which may be easily obtained.

Exp. with Cream of Tartar and Bicarbonate of Soda. Mix two teaspoons of cream of tartar with one of bicarbonate of soda, in a little warm water. A union of the two substances follows and they neutralize each other; that is, the cream of tartar is no longer acid, and the soda is no longer alkaline. Owing to the power of chemical affinities a separation or breaking up of these compounds takes place, and new substances, carbonic acid and rochelle salts, are formed out of their constituents. The effervescence which is seen is caused by the escape of the carbonic acid.

Exp. with Hydrochloric Acid and Soda. Put a few drops of chemically pure hydrochloric acid into a little water; then add soda. A violent effervescence will follow. Continue putting in soda until this ceases, when the reaction should be neutral. Test it with litmus-paper. If it turns blue litmus-paper red, it is acid; if red litmus-paper blue, it is alkaline. Add acid or soda, whichever is required, until there is no change produced in either kind of litmus-paper. The results of this experiment are similar to those in the first one, namely, carbonic acid and a salt. In this case the salt is sodium chlorid or common salt, which is in solution in the liquid. Evaporate the water, when salt crystals will be found.[3]

Oxid of Iron. A piece of iron when exposed to the weather becomes covered with a brownish-yellow coating, which does not look at all like the original metal. If left long enough it will wholly disappear, being completely changed into the yellowish substance, which is oxid of iron, a compound of oxygen and iron, commonly called iron rust.

Burning of Coal. A piece of coal burns in the grate and is apparently destroyed, leaving no residue except a little ashes. The carbon and hydrogen of the coal have united with the oxygen of the air, the result of which is largely the invisible gas, carbonic acid, which escapes through the chimney.

Formation of Water. Water is formed by the union of two invisible gases, hydrogen and oxygen. It bears no resemblance whatever to either of them. Its symbol is H2O.

All these are examples of chemical changes.

Definition of Chemical Change. Chemical changes or processes may be defined as those close and intimate actions amongst the particles of matter by which they are dissociated or decomposed, or by which new compounds are formed, and involving a complete loss of identity of the original substance.

Physical Changes. Mix a teaspoon of sugar with an equal amount of salt; the sugar is still sugar, and the salt remains salt; and they may each be separated from the mixture as such.

Water when frozen is changed from a liquid to a solid; its chemical composition, however, remains unchanged.

Water converted into steam by heat is changed from a liquid to a gas, but chemically there is no difference between the one and the other. Steam, water, and ice are forms of the same substance, the difference being physical, not chemical, and caused by a difference in temperature.

Lead melted so that it will run, and the solid lead of a bullet, are the same thing.

These illustrate physical changes.

Definition. When substances are brought together in such a way that their characteristic qualities remain the same, the change is called physical. It is less close and intimate than a chemical change. The transition from one state into another is also frequently only a physical change, as is seen in the transformation of water into steam, water into ice, etc.

 

ELEMENTS

One feature of the work of the chemist is to separate compound bodies into their simple constituents. These constituents he also endeavors to dissociate; and if this cannot be done by any means known to him, then the thing must be regarded as a simple substance. Such simple bodies are called elements.

Definition. An element then may be defined as a simple substance, which cannot by any known process be transformed into anything else; that is, no matter how it is treated, it still remains chemically what it was before. Gold, silver, copper, iron, platinum, carbon, phosphorus, calcium, oxygen, hydrogen, nitrogen, and chlorin are examples of elements. Once it was believed that there were but four elements in the world—earth, air, fire, and water. Then it was learned that these were not elements at all, but compounds, and the number of elements increased, until now sixty-eight are admitted to be simple primary substances. Some of these may in the future be proven to be compounds. Sulphur is at present in the doubtful list.

Oxygen. Oxygen is an element. It is an invisible gas, without taste or smell. It is the most abundant substance in the world, and an exceedingly active agent, entering into nearly all chemical changes and forming compounds with all known elements except one—fluorin. It is a necessity of life and of combustion.[4] It constitutes about two thirds of the weight of our bodies and one fifth of the weight of the air.

Hydrogen. Hydrogen is a gas. It is the lightest substance known. It unites with oxygen to form water, and, as will be seen later, enters into the composition of the human body.[5]

Nitrogen. Nitrogen is also a gas, but, unlike oxygen, is an inactive element. It supports neither fire nor life. It is not poisonous, however, for we breathe it constantly in the atmosphere, where its office is to dilute the too active oxygen. A person breathing it in a pure state dies simply from lack of oxygen.

Carbon. Carbon is a solid and an important and abundant element. It is known under three forms: diamond, graphite, and charcoal. The diamond is nearly pure carbon. Graphite (the "black-lead" of lead-pencils), coal, coke, and charcoal are impure forms of it. Carbon is combustible; that is, it burns or combines with oxygen. In this union carbonic acid is formed, and there is an evolution of heat, and usually, if the union be rapid and intense enough, of light. It is the valuable element in fuels, and in the body of man it unites with the oxygen of the air, yielding heat, to keep the body warm, and energy or muscular strength for work (Prof. Atwater). The carbonic acid formed in the body is given out by the lungs and skin.

Other Elements. There are many other elements about which it would be interesting to note something, such as calcium and phosphorus (found abundantly in the bones), magnesium, sulphur, sodium, iron, etc. Samples of these may be obtained to show to pupils, and descriptions given and experiments made, at the discretion of the teacher. Of the four most abundant elements of the body and of food,—oxygen, carbon, hydrogen, and nitrogen,—it is extremely important that some study be made, and if the apparatus can be procured, that it be of an experimental nature rather than simply descriptive.[6]

 

AIR

Air is made up principally of two elements, nitrogen and oxygen. It also always contains vapor of water and carbonic acid. Its average composition is as follows:

 

Nitrogen

78.49%

Aqueous Vapor

.84%

Oxygen

20.63%

Carbonic Acid

.04%

These are mixed together, not chemically united. Oxygen and nitrogen do unite chemically, but not in the proportions in which they exist in the air. Nitrous Oxid (N2O), sometimes called "Laughing Gas," is one of the compounds of nitrogen and oxygen.

 

FIRE

Exp. with a Candle. Take a tallow candle, and by means of a lighted match raise its temperature sufficiently high to start an action between the carbon in the candle and the oxygen of the air; in other words, light the candle. A match is composed of wood, sulphur, and phosphorus. The latter is a substance which unites with oxygen very easily; that is, at a low temperature. By friction against any hard object, sufficient heat is aroused to effect a union between the phosphorus of a match and the oxygen of the surrounding air; the flame is then conveyed to the sulphur, or the heat thus generated causes a union between it (the sulphur) and the oxygen, sulphur burning somewhat less freely than phosphorus; this gives enough heat to ignite the wood, and with its combustion we get sufficient heat to light the candle, or to start a chemical union between the combustible portion, carbon chiefly, of the candle and the oxygen of the air. Allow the candle to burn for a time, then put over it a tall lamp-chimney; notice that the flame grows long and dim. Next place on the top of the chimney a tin cover, leaving a small opening, and make an opening into the chimney from below, with a pin or the blade of a knife placed between it and the table; note that the candle burns dimly. Then exclude the flow of air by completely covering the top; in a moment, as soon as the oxygen inside the chimney is consumed, the candle will go out.

This shows (1) that air—in other words, oxygen—is necessary to cause the candle to burn; (2) that by regulating the draft or flow of air the intensity of the combustion may be increased or diminished; (3) that by completely excluding air the candle is extinguished. This experiment with the candle illustrates the way in which coal is consumed in a stove. By opening the drafts and allowing the inflow of plenty of oxygen, combustion is increased; by partially closing them it is diminished, and by the complete exclusion of air burning is stopped.

The products of the burning of coal are carbonic acid and a small amount of ash. Twelve weights of coal, not counting the ash, will unite with thirty-two weights of oxygen, giving as a result forty-four weights of carbonic acid. Accompanying the union there is an evolution of light and heat. The enormous amount of carbonic acid given out daily from fires is taken up by plants and used by them for food. In the course of ages these plants may become coal, be consumed in combustion, and, passing into the air, thus complete the cycle of change.

Fuel and Kindlings. The common fuels are coal, coke, wood, gas, coal-oil, and peat. For kindling, newspaper is good because, being made of straw and wood-pulp, it burns easily, and also because printers' ink contains turpentine, which is highly inflammable.

 

COMPOSITION OF THE BODY

Before entering upon the study of foods it is well to consider the composition of the human body, that some idea of its chemical nature may be gained. In the United States National Museum at Washington may be found some interesting information on this subject. From there much that is contained in the following pages is taken.

A complete analysis of the human body has never been made, but different organs have been examined, and chemists have weighed and analyzed portions of them, and from such data of this nature as could be obtained, estimates of the probable composition of the body have been calculated. Thirteen elements united into their compounds, of which there are more than one hundred, form it.

The following table gives the average composition of a man weighing 148 pounds.

 

Oxygen

92.4

Sulphur

.24

Carbon

31.3

Chlorin

.12

Hydrogen

14.6

Sodium

.12

Nitrogen

4.6

Magnesium

.04

Calcium

2.8

Iron

.02

Phosphorus

1.4

Fluorin

.02

Potassium

.34   

Prof. Atwater.

 

It will be seen from this that oxygen, carbon, hydrogen, and nitrogen constitute nearly the whole, the other elements being in very small proportions.

 

PRINCIPAL CHEMICAL COMPOUNDS IN
THE BODY

The following interesting table, obtained at the National Museum, gives the principal compounds of the body. Some of the more rare organic compounds are omitted.

 

Water:—A compound of oxygen and hydrogen.

 

Protein

{

Albuminoids

{

Myosin and syntonin of muscle (sometimes called "muscle fibrin").

Compounds,

{

or

{

 

 

{

Proteids.

{

 

composed

{

 

{

Albumen of blood and milk. Casein of milk.

mainly of

{

 

 

 

{

 

 

Carbon,

{

 

{

Collagen of bone and tendons.

}

which

 

{

Gelatinoids.

{

 

}

yield

Oxygen,

{

 

{

Chondrigen of cartilage, gristle,

}

gelatin.

 

{

 

 

Hydrogen,

{

 

{

 

{

Hemoglobin.

{

The red coloring matter of blood.

Nitrogen.

{

 

{

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fats,

{

 

{

Stearin,

}

These make up the bulk of the fat of the body.

 

{

Neutral

{

 

}

composed

{

Fats.

{

Palmitin,

}

They are likewise the chief constituents of tallow, lard, etc.

mainly of

{

 

{

 

}

 

{

 

{

Olein, etc.

}

Carbon,

{

 

 

 

 

 

{

Complex

{

Protagon,

}

Found chiefly in the brain, spinal cord, nerves, etc.

Oxygen,

{

Fats,

{

 

}

 

{

containing

{

Lecithin,

}

Hydrogen,

{

phosphorus

{

 

}

 

{

and nitrogen.

{

Cerebrin.

}

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Carbohydrates,

{

Glycogen, "animal starch." Occurs in the liver and other organs.

composed of

{

Carbon,

{

Inosite, "muscle sugar." Occurs in various organs.

Oxygen,

{

Lactose, "milk sugar." Occurs in milk.

Hydrogen.

{

Cholesterin. Occurs in brain, nerves, and other organs.

 

 

 

 

 

 

 

{

Phosphate of lime, or calcium phosphate.

}

Occurs chiefly in bones and teeth, though found in other organs.

 

{

Carbonate of lime, or calcium carbonate.

}

 

{

Fluorid of calcium, or calcium fluorid.

}

 

{

Phosphate of magnesia, or magnesium phosphate.

}

 

{

 

 

Mineral

{

Phosphate of potash, or potassium phosphate.

}

Salts.

{

Sulphate of potash, or potassium sulphate.

}

Distributed through the body in the blood, muscle, brain, and other organs.

 

{

Chlorid of potassium, or potassium chlorid.

}

 

{

Phosphate of soda, or sodium phosphate.

}

 

{

Sulphate of soda, or sodium sulphate.

}

 

{

Chlorid of sodium, or sodium chlorid.

}

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Now, since the body is composed of these substances, our food, including air and water, should contain them all in due proportion, that the growth, energy, and repair of the body may be healthfully maintained.

 

THE FIVE FOOD PRINCIPLES

For convenience of comparison foods may be divided into five classes: Water, Protein, Fats, Carbohydrates, Mineral Matters.

Some scientists include air in the list, but it has been thought best in this work to speak of it separately as the greatest necessity of life, but not in the sense of a direct nutrient.

An average composition of three of the principles is as follows:

 

 

{

Carbon

53

Protein

{

Hydrogen

7

 

{

Oxygen

24

 

{

Nitrogen

16

 

 

{

Carbon

76.5

Fats

{

Hydrogen

12

 

{

Oxygen

11.5

 

{

Nitrogen

 

 

{

Carbon

44

Carbohydrates

{

Hydrogen

6

 

{

Oxygen

50

 

{

Nitrogen

It will be seen from the above that the protein compounds contain nitrogen; the fats and carbohydrates do not.

 

WATER