Part 48

One radical fallacy identifies the stimulant habit in all its disguises: its victims mistake a process of irritation for one of invigoration.... Sooner or later the tonic is sure to pall while the morbid craving remains, and forces its victims either to increase the quantity of the wonted stimulant, or else to resort to a stronger poison. A boy begins with ginger beer and ends in ginger rum; the medical "tonic" delusion progresses from malt extract to Mumford's Elixir; and the nicotine habit once introduced, the alcohol habit often follows. The tendency of every stimulant habit is toward a stronger tonic....We have found that the road to the rum shop is paved with "mild stimulants," and that every bottle of medical bitters is apt to get the vender a permanent customer. We have found that cider and mild ale lead to strong ale, to lager beer, and finally to rum, and the truth at last dawns upon us that the only safe, consistent, and effective plan is Total Abstinence from all Poisons.

...More than the hunger after bread, more than the frenzy of love or hatred, the poison hunger overpowers every other instinct, even the fear of death. Dr. Isaac Jennings has illustrated this by the following example: A clergyman of his acquaintance attempted to dissuade a young man of great promise from habits of intemperance. "Hear me first a few words," said the young man, "and then you may proceed. I am sensible that an indulgence in this habit will lead to the loss of property, the loss of reputation and domestic happiness, to premature death, and to the irretrievable loss of my immortal soul; and now, with all this conviction resting firmly on my mind and flashing over my conscience like lightning, if I still continue to drink, do you suppose anything you can say will deter me from the practice?"

...Ignorance is a chief cause of intemperance. The seductions of vice would not mislead so many of our young men if they could realize the significance of their mistake. There is still a lingering belief that, with due precaution against excess and adulteration, a dram drinker might "get ahead" of Nature, and, as it were, trick her out of some extra enjoyment. There is no hope of a radical reform till intelligent people have realized the fact that this "trick" is in every instance a losing game, entailing penalties which far outweigh the pleasures that the novice may mistake for enjoyments. For the depression of the vital energy increases with every repetition of the stimulating process, and in a year after the first dose all the "grateful and exhilarating tonics" of our professional poison venders can not restore the vigor, the courage, and the cheerfulness which the mere consciousness of perfect health imparts to the total abstainer. A great plurality of all beginners underrate the difficulty of controlling the cravings of a morbid appetite. They remember that their natural inclinations at first opposed, rather than encouraged, the indulgence; and they feel that at the present stage of its development they could abjure the passion without difficulty. But they overlook the fact that the moral power of resistance decreases with each repetition of the dose, and that the time will come when only the practical impossibility of procuring their wonted tipple will enable them to keep their pledge of total abstinence. It is true that, by the exercise of a constant self-restraint, a person of great will force may resist the progressive tendency of the poison habit and confine himself for years to a single cigar or a single bottle of wine per day....But the attempt to resist that bias will overtask the strength of most individuals. According to the allegory of the Grecian myth, the car of Bacchus was drawn by tigers; and it is a significant circumstance that war, famine, and pestilence have so often been the forerunners of veritable alcohol epidemics....The explanation is that, after the stimulant habit has once been initiated, every unusual depression of mental or physical vigor calls for an increased application of the accustomed method of relief....Nations who are addicted to the worship of a poison god will use his temple as a place of refuge from every calamity; and children whose petty ailments have been palliated with narcotics, wine, and cordials, will afterward be tempted to drown their greater sorrows in deeper draughts of the same nepenthe.--FELIX L. OSWALD, M.D., Remedies of Nature, Popular Science Monthly, October and November, 1883.

DANGERS FROM THE USE OF NARCOTICS.--It may seem a paradox, it is a truism, to say that in the value of narcotics lies their peril. Because they have such power for good, because the suffering which they alleviate is in its lighter forms so common, because neuralgia and sleeplessness are ailments as familiar to the present generation as gout, rheumatism, and catarrh were to our grandfathers, therefore the medicines which immediately relieve sleeplessness and neuralgic pain are among the most dangerous possessions, the most subtle temptations of civilized life. Every one of these drugs has, besides its instant and beneficial effect, other and injurious tendencies. The relief which it gives is purchased at a certain price; for, at each repetition of the dose, the immediate relief is lessened or rendered uncertain, while the mischievous influence is enhanced and aggravated; till, when the drug has become a necessity of life it has lost the greater part, if not the whole, of its value, and serves only to satisfy the need which itself alone has created....We read weekly of men and women poisoned by an overdose of some favorite sedative, burned to death or otherwise fatally injured, while insensible from self- administered ether or chloroform....The narcotist keeps chloroform or chloral always at hand, forgetful or ignorant that one sure effect of the first dose is to produce a semistupor more dangerous than actual somnolence. In that semistupor the patient is aware, or fancies, that the dose has failed. The pain that has induced a lady to hold a chloroformed handkerchief under her nostrils returns while her will and her judgment are half paralyzed. She takes the bottle from the table beside her bed, intending to pour an additional supply upon her handkerchief. The unsteady hand perhaps spills a quantity on the sheet, perhaps sinks with the unstoppered bottle under her nostrils, and in a few moments she has inhaled enough utterly to stupefy, if not to kill. The sleepless brain worker also feels that his usual dose of chloral has failed to bring sleep; he is not aware how completely it has stupefied the brain, to which it has not given rest. His judgment is gone, so is his steadiness of hand; and he pours out a second and too often a fatal dose....But the cases that end in a death terrible to the family, though probably involving little or no suffering to the victim himself, are by no means the worst. A life poisoned, paralyzed, rendered worthless for all the uses of intellectual, rational, we might almost say of human existence, is worse for the sufferer himself and for all around him than a quick and painless death; and for one such death there must be twenty, if not a hundred, instances of this worst death in life....The demoralization of the narcotist is not, like that of the drunkard, rapid, violent, and palpable; but gradual, insidious, perceptible at first only to close observers and intimate friends. Here and there we find a constitution upon which opium exerts few or none of its characteristic effects. Such cases are, of course, wholly exceptional; but their very existence is a danger to others, misleading them into the idea that they may dally with the tempter without falling under its yoke, or may fall under that yoke and find it a light one. I doubt, however, whether the most fortunate of its victims would encourage the latter idea; whether there be an opium eater who would not give a limb never to have known what opium slavery means....Besides, no one can be sure, or indeed reasonably hope, that the mischief will be confined to the individual victim. That the children of drunkards are often predisposed to insanity is notorious; that the children of habitual opium eaters inherit an unmistakable taint, whether in a diseased brain, in morbid cravings, or simply in a will too weak to resist temptation, is less notorious, but equally certain.--PERCY GREG, Narcotics and Stimulants, Contemporary Review.

Thus also in America scarcely a week passes but we see announced in the public prints deaths or suicides resulting from the use of narcotics. Now, it is from tobacco: A Yale College student dies from excessive smoking; another student in the same college, and as a result of the same habit, commits suicide; a third young man is found dead in his bed in New York, from heart disease induced by cigarettes; and so, month by month, and year by year, grows in rapid increase the list of tobacco deaths.--Or, again, it is from opium. A Harvard student with two of his college companions in search of a new sensation, tries opium smoking one fatal night and dies before morning; a woman in Ohio, belonging to a prominent family, dies at the age of thirty-three years, from an overdose of morphine, her body covered with hypodermic scars; another, once the respected wife of a Baptist clergyman, becomes a morphine drunkard, drifts, step by step, into a Central New York Almshouse, and there hangs herself; a third, young, accomplished, and wealthy, falls first a victim to the morphine habit, then to opium smoking, finally becomes the frequenter of a New York opium joint, and so is lost forever to home, friends, and respectability.-- Occasionally it is cocaine, as in the case of the Chicago physician, who, for the purposes of investigation, experiments with this new drug upon himself, his wife, and finally upon his innocent children; the entire family being found unconscious from the effects of the subtle narcotic. These are but solitary instances in an appallingly long list of similar cases, most of which have occurred within the last two years (1887-'88).

Cigarette Smoking is chargeable with a growing demoralization and mortality among boys and young men. It is no uncommon sight to see lads of ten years old and under, with the irresponsibility of ignorant childhood, puffing the dangerous cigarette, and thus undermining health and intellect at the very outset of useful existence. Even when told of the near and remote perils thus incurred, they scarcely listen, for do not they see their elders smoke and prosper?--Most of them do not understand that there is more danger to the young than to the old in the tobacco habit, more danger to some constitutions than to others, and more danger in the cigarette than even in the pipe or the cigar. Pause a moment to consider it, boys, when you are tempted to light the clean-looking, paper-covered roll and place it in your mouth. Think of the heated smoke irritating the delicate membrane in your throat, dulling your brain, and vitiating the blood which should be bounding fresh and pure through your veins. Think of the many filthy and diseased mouths from which have been cast away the tobacco refuse, picked up in streets and public places to reappear in the "Cheap and Popular Brand" which looks to you so innocent and so attractive. It is astonishing, indeed, how an otherwise cleanly boy will consent to defile himself with these vile abominations. And yet, I have known lads who--not always with perfect politeness--would fastidiously refuse "hash" at their mother's breakfast table, but who would shortly afterward serenely place one of these unknowable compounds between their lips and walk away with the air of superior manhood!

Of Chloral Hydrate, Dr. Fothergill remarks: "When this was announced with a flourish of trumpets as a perfectly innocuous narcotic, the sleepless folk hailed its advent with eager acclamation. But a little experience soon demonstrated that the innocuous, harmless drug was far from the boon it was proclaimed. In fact, the impression of its harmlessness was the outcome of ignorance of its properties. Death after death, even among medical men themselves, as well as nonprofessional persons, have already resulted from the use, or rather misuse, of this narcotic agent."

The Bromides (of Soda or Potash), also, should be used with caution, and only on the prescription of a conscientious physician. "The bromide of potash," says Percy Greg, "is claimed not to produce sleep by stupefaction, like chloral or opium, but, at least in small doses, to allay the nervous irritability which is often the sole cause of sleeplessness. But in larger quantities and in its ultimate effects, it is scarcely less to be dreaded than chloral." Overdoses of the bromides will produce among other evil effects a peculiar eruption upon the face, which, though generally temporary, is liable to reappear from time to time under certain conditions of the system, and especially upon a subsequent dose, however dilute.

Absinthe is a compound of absinthium (the essence of wormwood), various aromatic oils, and alcohol. Absinthium, taken in small doses, induces trembling, stupor, and insensibility; in larger doses, epilepsy. When, therefore, this dangerous essence is added to alcohol, it strengthens its influence to specific disease. Absinthe drinking is recognized in France as such a serious vice that it has been officially prohibited in the army and navy.

Hasheesh is a syrup prepared from the leaves and flowers of Indian Hemp. Though its use in this country is comparatively small, instances are not unknown in which reckless or curious persons have fatally experimented with it. As a medicine, it is in limited use, and with results not always satisfactory. It acts in a peculiar manner upon the nervous centers, occasioning that strange condition of the nervous system called catalepsy, in which the limbs of the unconscious patient remain stationary in whatever position they may be placed. After an average dose of hasheesh, the subject becomes the helpless victim of rapidly shifting ideas, a prominent characteristic of which is an entire loss of judgment as to time and place. A larger dose produces hallucinations and delirium, with that distressing sensation of falling through endless space which is induced in some people by opium. [Footnote: In an article entitled "An Overdose of Hasheesh" (Popular Science Monthly, February, 1884), Miss MARY A. HUNGERFORD gives a vivid description of a painful experience with this drug, some portion of which is as follows:

"Being one of the grand army of sufferers from headache, I took, last summer, by order of my physician, three small daily doses of hasheesh in the hope of holding my intimate enemy in check....I grew to regard the drug as a harmless medicine, and one day, when I was assured by some familiar symptoms that my headache was about to assume an aggravated form, I took a larger quantity than had been prescribed. Twenty minutes later I was seized with a strange sinking or faintness which gave my family so much alarm that they telephoned at once for the doctor.

"...One terrible reality--I can hardly term it a fancy even now--that came to me again and again, was so painful that it must, I fear, always be a vividly remembered agony....I died, as I believed, although by a strange double consciousness I knew that I should again reanimate the body I had left. In leaving it I did not soar away, as one delights to think of the freed spirits soaring....I sank, an intangible, impalpable shape, through the bed, the floors, the cellar, the earth, down, down, down! Like a fragment of glass dropping through the ocean, I dropped uninterruptedly through the earth and its atmosphere, and then fell on and on forever....As time went on, and my dropping through space continued, I became filled with the most profound loneliness, and a desperate fear took hold of me that I should be thus alone for evermore, and fall and fall eternally....There was, it seemed to me, a forgotten text which, if remembered, would be the spell to stop my fatal falling. I sought in my memory for it, I prayed to recall it, I fought for it madly, wrestling against the terrible fate which seemed to withhold it. Single words of it came to me in disconnected mockery, but erased themselves instantaneously. Mentally, I writhed in such hopeless agony that, in thinking of it, I wonder I could have borne such excess of emotion and lived....I began, then, without having reached any goal, to ascend. As I rose, a great and terrible voice from a vast distance pronounced my doom: 'Fall, fall, fall, to rise again in hopeless misery, and sink again in lonely agony forever.' ...Then ensued a wild and terrible commingling of unsyllabled sounds, so unearthly that it is not in the power of language to fitly describe them. It was something like a mighty Niagara of shrieks and groans, combined with the fearful din and crash of thousands of battles and the thunderous roar of a stormy sea....I fought my upward way in an agony which resembled nothing so much as the terrible moment when, from strangling or suffocation, all the forces of life struggle against death, and wrestle madly for another breath. In place of the woeful sounds now reigned a deadly stillness, broken only at long but regular intervals by a loud report, as if a cannon, louder than any I ever heard on earth, were discharged at my side, almost shot into me, I might say, for the sound appeared to rend me from head to foot, and then to die away into the dark chaos about me in strange, shuddering reverberations. Even in the misery of my ascending I was filled with a dread expectancy of the cruel sound. It gave me a feeling of acute physical torture, with a lingering intensity that bodily suffering could not have. It was repeated an incredible number of times, and always with the same suffering and shock to me. At last the sound came oftener, but with less force, and I seemed again nearing the shores of time. Dimly in the far distance I saw the room I had left, myself lying still and deathlike upon the bed, and the friends watching me....Then, silently and invisibly I floated into the room, and was one with myself again.

"...'She is conscious now,' I heard one of the doctors say, and he gently lifted the lids of my eyes and looked into them. I tried my best to throw all the intelligence I could into them, and returned his look with one of recognition. But, even with my eyes fixed on his, I felt myself going again in spite of my craving to stay. I longed to implore the doctor to save me, to keep me from the unutterable anguish of falling into the vastness and vagueness of that shadowy sea of nothingness again. I clasped my hands in wild entreaty; I was shaken by horrible convulsions--so, at least, it seemed to me at the time--but, beyond a slight quivering of the fingers, no movement was discernible by the others....For five hours I remained in the same condition--short intervals of half-consciousness and then long lapses into the agonizing experiences I have described....Coming out of the last trance, I discovered that the measured rending report like the discharge of a cannon, which attended my upward way, was the throbbing of my own heart."]

Concerning all these and other narcotics, it should never be forgotten that they are true poisons, sold with the mark of skull and crossbones, useful, like strychnine and henbane, in the hands of a skillful physician, but fraught with deadly danger when otherwise employed. Their private use is never safe. The weak and nervous invalid, who can not by hygienic means build up new strength, need never hope to gain it by surreptitiously indulging in popular narcotics. Instead, he will soon discover that he has but added to his list of ills a new and fatal one.--E. B. S.

THE SPECIAL SENSES.

AN EDUCATED SENSE OF TOUCH (p. 230).--Laura Dewey Bridgman, teacher in the Perkins Institute for the Blind, South Boston, lost her sight, hearing, and sense of smell, when she was two years of age. At the age of eight years she was taken to the institution where she yet remains. At this time, by following her mother around the house she had become familiar with home appointments, and by feeling her mother's hands and arms had also learned to sew and knit. When she first became an inmate of the Perkins Institute, she was bewildered by her strange surroundings, but after she had become used to place and people, through her one and only sense, her education was carefully begun. Through indomitable effort on the part of her preceptor, she was taught to write, read, and spell, by means of her fingers, and thus to exchange sentiments with her teachers and with others skilled in the mysterious language of the blind and the mute. She is now as proficient in the ordinary branches of learning as is the average person, possessed of all the senses. Her studies include geography, arithmetic, algebra, geometry, history, and philosophy. She makes her own clothing, can run a sewing machine, and observes great neatness in her dress and the arrangements of her room. Her character is religious, and she has great success as a teacher. Not long since, she celebrated, on the same day, her fifty-eighth birthday and the fiftieth anniversary of her entrance to the Perkins Institute. During her earlier years, it was her practice to keep a journal, and she now has about forty manuscript books of her own making. She has also written three autobiographical sketches, several poems, and is an accomplished correspondent. When Miss Bridgman expresses pleasure, she clasps her hands and smiles. So keen and refined are her sensibilities, that it is said she can, in a small way, appreciate the beauty of music by means of the sound vibrations on the floor.--MRS. GEORGE ARCHIBALD. (Laura D. Bridgman died in 1889.)

THE NOSE (p. 232).--The Anatomy of the Nose.--Probably most of us look upon the nose as a double hole in the head, by which we get, with more or less acuteness, a sense of smell, and through which we occasionally breathe. The intricate mechanism, and the skillful adaptation of means to end, which, in common with the other organs of special sense, it exhibits, naturally do not reveal themselves to any but the students of anatomy and physiology. Its fourteen bones are probably better hidden than any other fourteen bones of the body, and assist in converting what would otherwise be a mere channel of communication, into a series of cavities designed and adapted for particular purposes. The arch of four bones which forms the bridge of the nose, and which is of such strength as to enable the gymnast of the circus to perform the feat of supporting with it a man on a ladder, is pieced on with cartilage to form the nostrils, through which the nose communicates with the outer air. Similar openings behind connect it with the upper and posterior parts of the mouth. The space between these anterior and posterior openings makes a large chamber, divided by a vertical wall into halves, each of which is still further separated into three irregular cavities by three bones, called spongy, from the porosity and delicacy of their texture. The ceiling of these chambers is formed by a bone of the thinness of paper, upon which lies the front part of the brain,--a fact the Egyptians made use of in embalming their corpses, easily crushing this bone, and extracting the brain through the nostrils. This bone is called cribriform (sieve-like), because it is perforated by many minute holes, through which, from the olfactory bulbs (specialized parts of the brain in which is resident the capacity of smell) that rest on its upper surface, issue the delicate filaments of the olfactory nerves, to spread themselves over the lining membrane of the two upper spongy bones. It is in the upper chambers of the nose, therefore, that the function of smell is performed; the nerves that supply the lower spongy bone being entirely unconnected with the organs of smell. Over these latter, however, sweep in and out the currents of air when the act of respiration is properly carried out, and it is these that are especially concerned in its abnormal performance. Usually but a very little of the volume of air that traverses the lower chamber of the nose has any influence upon its upper regions; and therefore, when our attention is attracted by an odor, we sniff, in order to bring a larger quantity of air into contact with the higher parts of the nose, or olfactory cavities, where odors are perceived.

But the half has not been told of the anatomical and physiological arrangements of the nose. By minute openings its chambers have communication with many other parts of the head,--with the hollow that forms the greater part of the cheek bone; with the eye by a minute spout that carries off the lachrymal secretion, unless the tears are so abundant as to roll down the cheeks; with the front of the roof of the mouth; with the abundant cells of the bone that makes the forehead, and the congestion of whose lining membrane probably accounts for the severe headache that so often accompanies and aggravates a "cold in the head." The gateway to the inner air passages, its abundant surfaces raise the air inspired to the temperature of the body, supply it with the moisture it lacks, and sift from it more or less of the mechanical impurities with which the atmosphere of our houses and shops is laden.--MAURICE D. CLARKE, M.D., Popular Science News, April, 1888.

Smell Necessary to Taste.--What we are in the habit of calling a "taste," is in most cases a compound of smell, taste, temperature, and touch--these four sensations ranking in gastronomic importance in the order in which they are here named....Amusing experiments may be made, showing that without the sense of smell it is commonly quite impossible to distinguish between different articles of food and drink. Blindfold a person and make him clasp his nose tightly, then put successively into his mouth small pieces of beef, mutton, veal, and pork, and it is safe to predict that he will not be able to tell one morsel from another. The same result will be obtained with chicken, turkey, and duck; with pieces of almond, walnut, and hazel-nut; with slices of apple, peach, and pear; or with different kinds of cheese, if care be taken that such kinds are chosen as do not, by their peculiar composition, betray their identity through the nerves of touch in the mouth. To hold an article of food under the nose at table would be justly considered a breach of etiquette. But there is a second way of smelling, of which most people are quite unconscious, viz., by exhaling through the nose while eating and drinking....It is well known that only a small portion of the mucous membrane which lines the nostrils is the seat of the endings of the nerves of smell. In ordinary expiration, the air does not touch this olfactory region, but by a special effort it can be turned into that direction....Instinct teaches most persons while eating to guide the air, impregnated with the fragrance of the food, to a part of the nostrils different from that used during ordinary exhalation; but, being unaccustomed to psychologic analysis of their sensations, they remain quite unconscious of this proceeding, and are, indeed, in the habit of confusing their sensations of taste, smell, touch, and temperature in a most absurd manner....

In trying to ascertain by experiment how far smell, touch, and temperature enter into this compound sensation, popularly known as "taste," it is best to make use of the pungent condiments. Mustard and horse-radish, for example, have little or no taste, but reserve their pungent effect for the mucous membrane of the nose during expiration. It is an advantage to know this, for if care is taken to breathe only through the mouth, we need no longer prepare to shed tears every time we help ourselves to the mustard. The pungent quality of mustard, the fiery quality of ginger, and the cool sensation in the mouth after eating peppermint, are due to the nerves of touch and temperature, which are commonly classed as one sense, though they are quite as distinct sensations as sight and hearing, or taste and smell....

There are two ways in which the effort to extract all its fragrance from a morsel of food confers a benefit.

(1.) It is necessary to keep the morsel in the mouth as long as possible. Now the habit thus formed of eating very slowly is of the utmost importance, for if farinaceous articles of food are swallowed before the saliva has had time to act on them, they are little better than so much waste material taken into the system; and if meat is not thoroughly masticated, the stomach is overloaded with work which should have been done by the teeth; the result, in either case, is dyspepsia. It has been suggested that Mr. Gladstone owes his remarkable physical vigor to certain rules for chewing food, which he adopted in 1848, and to which he has adhered ever since. "He had always," we are told, "paid great attention to the requirements of Nature, but he then laid down as a rule for his children that thirty-two bites should be given to each mouthful of meat, and a somewhat lesser number to bread, fish, etc."

(2.) Besides this indirect advantage resulting from the effort to get at the fragrant odors of food, there is a still more remarkable direct advantage. It is one of the most curious psychologic facts that odors exert a strong influence on our system, either exhilarating or depressing. While an unpleasant odor may cause a person to faint, the fumes of the smelling bottle will restore him to consciousness. The magic and value of gastronomic odors lies in this, that they stimulate the flow of saliva and other alimentary juices, thus making sure that the food eaten will be thoroughly utilized in renovating the system.--HENRY T. FINCK, in "The Gastronomic Value of Odors." HYGIENE OF THE EAR (p. 236).--Never Box a Child's Ear.--Children and grown persons alike may be entirely deafened by falls or heavy blows upon the head. Boxing the ears produces a similar effect, though more slowly and in less degree, and tends to dull the sensibility of the nerve, even if it does not hurt the membrane. I knew a youth who died from a terrible disease of the ear. There had been a discharge from it since he was a child. Of course his hearing had been dull; and his father had often boxed his ear for inattention! Most likely that boxing on the ear, diseased as it was, had much to do with his death. And this brings me to the second point. Children should never be blamed for being inattentive, until it has been found out whether they are not a little deaf. This is easily done by placing them at a few yards' distance, and trying whether they can understand what is said to them in a rather low tone of voice. Each ear should be tried, while the other is stopped by the finger. Three things should be remembered here: 1. That slight degrees of deafness, often lasting only for a time, are very common among children, especially during or after colds. 2. That a slight deafness, which does not prevent a person from hearing when he is expecting to be spoken to, will make him very dull to what he is not expecting. 3. That there is a kind of deafness in which a person can hear pretty well while listening, but is really very hard of hearing when not listening.

Avoid Direct Draughts in the Ear.--There are some exposures especially to be guarded against. One is sitting or driving with the ear exposed to a side wind. Deafness has also been known to come from letting rain or sleet drive into the ear.

Do not Remove the Earwax.--It ought to be understood that the passage of the ear does not require cleaning by us. Nature undertakes that task, and, in the healthy state, fulfills it perfectly. Her means for cleansing the ear is the wax. Perhaps the reader has never wondered what becomes of the earwax. I will tell him. It dries up into thin fine scales, and these peel off, one by one, from the surface of the passage, and fall out imperceptibly, leaving behind them a perfectly clean, smooth surface. In health the passage of the ear is never dirty; but, if we attempt to clean it, we infallibly make it so. Washing the ear out frequently with soap and water keeps the wax moist when it ought to become dry and scaly, increases its quantity unduly, and makes it absorb the dust with which the air always abounds. But the most hurtful thing is introducing the corner of the towel, screwed up, and twisting it round. This does more harm to ears than all other mistakes together. It drives down the wax upon the membrane, much more than it gets it out. But this plan does much more mischief than merely pressing down the wax. It irritates the passage, and makes it cast off small flakes of skin, which dry up, and become extremely hard, and these also are pressed down upon the membrane. Often it is not only deafness which ensues, but pain and inflammation, and then matter is formed which the hard mass prevents from escaping, and the membrane becomes permanently diseased.

The Eustachian Tube.--The use of this tube is twofold. First, it supplies the drum with air, and keeps the membrane exactly balanced, and free to move, with equal air pressure on each side; and, secondly, it carries off any fluid which may be in the drum, and prevents it from being choked by its own moisture. It is not always open, however, but is opened during the act of swallowing, by a little muscle which is attached to it just as it reaches the throat. Most persons can distinctly feel that this is the case, by gently closing the nose and swallowing, when a distinct sensation is felt in the ears. This sensation is due to a little air being drawn out of the ears through the open tube during swallowing; and it lasts for a few minutes, unless the air is again restored by swallowing with the nose unclosed, which allows for the moment a free communication between the ear and the throat. We thus see a reason for the tube being closed. If it were always open, all the sounds produced in the throat would pass directly into the drum of the ear, and totally confuse us. We should hear every breath, and live in a constant bewilderment of internal sounds. At the same time the closure, being but a light contact of the walls of the tube, easily allows a slight escape of air from the drum, and thus not only facilitates and regulates the oscillations of the air before the vibrating membrane, but provides a safety valve, to a certain extent, against the injurious influence of loud sounds.

The chief use of the Eustachian tube is to allow a free interchange of air between the ear and the throat, and it is very important that its use in this respect should be understood. Persons who go down in diving bells soon begin to feel a great pressure in the ears, and, if the depth is great, the feeling becomes extremely painful. This arises from the fact that in the diving bell the pressure of the air is very much increased, in order to balance the weight of the water above; and thus it presses with great force upon the membrane of the drum, which, if the Eustachian tube has been kept closed, has only the ordinary uncompressed air on the inner side to sustain it. It is therefore forced inward and put upon the stretch, and might be even broken. Many cases, indeed, have occurred of injury to the ear, producing permanent deafness, from descents in diving bells, undertaken by persons ignorant of the way in which the ear is made; though the simple precaution of frequent swallowing suffices to ward off all mischief. For, if the Eustachian tube is thus opened, again and again, as the pressure of the outside air increases, the same compressed air that exists outside passes also into the inside of the drum, and the membrane is equally pressed upon from both sides by the air, and so is free from strain. The same precaution is necessary in ascending lofty mountains.-- DR. JAMES HINTON.

THE COLORED CURTAIN IN THE EYE (p. 238).--This ring-like curtain in the eye, of gray, green, bluish-green, brown, and other colors, is one among the very many remarkable contrivances of the organic world. The eye can not bear the entrance of too much light, and the colored curtain so regulates its own movements as to serve this requirement. The dark circular aperture in the center, known as the pupil, is consequently forever altering in size; on a bright, sunshiny day, out in the open, it may be only the size of a pin's head, but at night, when there is no light stronger than starlight, it is even bigger than a pea. The eye curtain is fixed at its outer edge, leaving the inner edge to contract or expand, which it does automatically and quite independent of the will, ever preserving its circular outline. Its movements may be watched in a variety of ways, some of which we shall describe.