expert, looking into the ear, pressing against the inside of the drum membrane. Stiffening or immovability of the joints between these little bones, from catarrh of the middle ear, is most important in producing permanent deafness. The middle ear space is lined with mucous membrane continuous with that of the throat through the Eustachian tube. This serves to drain mucus from the middle ear, and also to equalize the air pressure on the eardrum so that the pressure within the middle ear shall be the same as that without.

When there is catarrh or inflammation of the throat or nose it is apt to extend up the Eustachian tubes and involve the middle ear. In this way the tubes become choked and obstructed with the oversecretion or by swelling. The air in the middle ear then becomes absorbed in part, and a species of vacuum is produced with increased pressure from without on the eardrum. The drum membrane will be pressed in, and through the little bones pressure will be made against the sensitive nervous apparatus, irritating it and giving rise to deafness, dizziness, and the sensation of noises in the ear. Noises from without will also be intensified in passing through the middle ear when it is converted into a closed cavity through the blocking of the Eustachian tube.

A very important feature following obstruction of the Eustachian tubes, and rarefaction of the air in the middle ear, is that congestion of the blood vessels ensues and increased secretion, because the usual pres

sure of the air on the blood vessels within the middle ear is taken away.

This then is the cause of most permanent deafness, to which is given the name catarrhal deafness, because every fresh cold in the head, or sore throat, tends to start up trouble in the ear such as we have just described. Repeated attacks leave vestiges behind until permanent deafness remains. In normal conditions every act of swallowing opens the apertures of the Eustachian tubes in the throat, and allows of equalization of the air pressure within and without the eardrum, but if the nose is stopped up by a cold in the head, or enlargement of the tonsil at the back of the nose (as from adenoids, see p. 75), the process is reversed and air is exhausted from the Eustachian tubes with each swallowing motion.

The moral to be drawn from all the foregoing is to treat colds properly when they are present, keeping the nose and throat clean and clear of mucus, and to have any abnormal obstruction in the nose or throat and source of chronic catarrh removed, as enlarged tonsils, adenoids, and nasal outgrowths.

FOREIGN BODIES IN THE EAR.-Foreign bodies, as buttons, pebbles, beans, cherry stones, coffee, etc., are frequently placed in the ear by children, and insects sometimes find their way into the ear passage and create tremendous distress by their struggles. Smooth, nonirritating bodies, as buttons, pebbles, etc., do no particular harm for a long time, and may remain

unnoticed for years. But the most serious damage not infrequently results from unskillful attempts at their removal by persons (even physicians unused to instrumental work on the ear) who are driven to immediate and violent action on the false supposition that instant interference is called for. Insects, it is true, should be killed without delay by dropping into the ear sweet oil, castor, linseed, or machine oil or glycerin, or even water, if the others are not at hand, and then the insect should be removed in half an hour by syringing as recommended for wax (p. 49).

To remove solid bodies, turn the ear containing the body, downward, pull it outward and backward, and rub the skin just in front of the opening into the ear with the other hand, and the object may fall out.

Failing in this, syringing with warm water, as for removal of wax, while the patient is sitting, may prove successful. The essentials of treatment then consist, first, in keeping cool; then in killing insects by dropping oil or water into the ear, and, if syringing proves ineffective, in using no instrumental methods in an attempt to remove the foreign body, but in awaiting such time as skilled medical services can be obtained. If beans or seeds are not washed out by syringing, the water may cause them to swell and produce pain. To obviate this, drop glycerin in the ear which absorbs water, and will thus shrivel the seed.

EARACHE.-Earache is due usually not to neuralgia of the ear, but to a true inflammation of the

middle ear, which either subsides or results in the accumulation of inflammatory products until the drum is ruptured and discharge occurs from the external canal. The trouble commonly originates from an extension of catarrhal disease of the nose or throat; the germs which are responsible for these disorders finding their way into the Eustachian tubes, and thus into the middle ear. Any source of chronic catarrh of the nose or throat, as enlarged and diseased tonsils, adenoids in children, or nasal obstruction, favor the growth of germs and the occurrence of frequent attacks of acute catarrh or "colds." The grippe has been the most fruitful cause of middle-ear inflammation and earache in recent years. Any act which forces up fluid or secretions from the back of the nose into the Eustachian tubes (see section on Deafness) and thus into the middle ear, is apt to set up inflammation there, either through the introduction of germs, or owing to the mechanical injury sustained. Thus the use of the nasal douche, the act of sniffing water into the nose, or blowing the nose violently when there is secretion or fluid in the back of the nose, or the employment of the post-nasal syringe are one and all attended with this danger. Swimming on the back, diving, or surf bathing also endangers the ear, as cold water is forcibly driven not only into the external auditory canal, but, what is more frequently a source of damage, into the Eustachian tubes through the medium of the nose or throat. In this case the plugging

of the nose with cotton would be of more value than the external canal, as is commonly practiced. If water has entered the Eustachian tube, blowing the nose and choking merely aggravate the trouble. The wiser plan is to do nothing but trust that the water will drain out, and if pain ensues treat it as recommended below for earache.

Water in the ears is sometimes removed by jumping about on one foot with the troublesome ear held downward, and if it is in the external canal it may be wiped out gently with cotton on the end of a match, as recommended in the article on treating wax in the ear (see p. 49). In the treatment of catarrh in the nose or throat only a spray from an atomizer should be used, as Dobell's or Seiler's solutions followed by menthol and camphor, twenty grains of each to the ounce of alboline or liquid vaseline.1

Exposure to cold and the common eruptive diseases of children, as scarlet fever, measles, and also diphtheria, are common causes of middle-ear inflammation. In the latter disorders the protection afforded by a nightcap which comes down over the ears, and worn constantly during the illness, is frequently sufficient to ward off ear complications.

Although earache or middle-ear inflammation is common, its dangers are not fully appreciated, since the various complications are likely to arise, and the result is not rarely serious. Extension of the in

1 See p. 63.