In cases in which the one part of the bowels has not yet gone far into the other, nothing more is required than a cold cloth gently pressed over the parts. We have seen relief set in on the fifth or sixth change of such a cloth, when nothing else was used whatever. When a hot bag, or bran poultice, has been put on the back, and cold cloths persistently changed over the bowels, the whole matter has been put to rights, and natural motion of the bowels has been had within an hour after the applications have been begun.

Interior of small intestine.

There is, however, a stronger measure than merely heating the back and cooling the front in this way. The patient may be put at once into a sitting bath or small tub, and a panful of cold water poured or dashed on to the bowels; they then contract so powerfully, and shorten themselves so much, that all invagination, as it is called, is made to cease instantly. We should be disposed to try the mildest method in the first instance, unless the case is one in which the lock in the bowels had just taken place. Then it might be well to dash the pailful of water on so as to put all right at once, and afterwards simply to apply such remedies as would tend to prevent a recurrence of the evil.

It is, however, usually the case that the distress has lasted some time before an opportunity of doing anything occurs, inflammation, more or less, has set in, weeks may have passed, and blundering treatment may have done great mischief. Then it is safe to use the heat at the back, and frequently changed cold cloths in front, so as to reduce the inflammation, and contract the bowels more slowly, so as to remove the obstruction. When these have been used for some time, if the obstruction is not removed it will be well to resort to the stronger measures. Nothing is more beautifully simple than the ordinary action of the bowels. The healthful movement is like that by which an earth-worm moves along the ground: so long as the tube is thus moving its contents onward, by contraction and expansion, no part can pass inside or outside that which is before it; but when one part loses nervous tension, and expands without contracting quickly enough, the part behind it tends to worm itself into it, and a "knot," as it is sometimes called, is formed. No possible instrument can reach it except by cutting the body outright, but the action of cold is so powerful in contracting the tube that the "loop," as it is also called, is drawn out, and the right state of things is produced. It is important to remark that there are glands near the lower bowel that swell and form tumours. The cold applications reduce these very speedily to their usual size, and if their swelling is an obstruction, it is soon removed. But it is the lock in the tube itself that is the real malady of which so many die, and with which so many more narrowly escape.

The trouble is best avoided by attention to the regular action of the bowels. It arises from great irregularity in that action.

Bowels, Reversed.See Bowels, Locking of, above.

Brain Exercise.—Proper exercise for the brain is most important. But this is not to be found in that kind of severe mental labour which is sometimes mistaken for it. Children at play have genuine brain exercise. So has a man at what is called a "hobby," such as photography, golf, or cycling. The child at school, the man in his office, are not at exercise, but at wearing work. This distinction is most important. Exercise, again, is not found in careless dreaming, but in some form of "play" which calls for steady, but almost unconscious, and altogether enjoyable thinking. Books sometimes furnish this, when they lift the mind as far as possible out of its usual track, and produce only pleasant thoughts. Tragedies, novels which end miserably, or which are pessimistic, should all be avoided. Perhaps some easy science or art is the best exercise of all, when the brain is suffering from overstrain. But taste will guide in this. The great matter is to have pleasurable, easy, and natural employment for the brain. This and not work is strengthening "exercise," whether in child or man. So far as we can we should see that the weary get it. For he who procures this for his fellow works immense good.

We have seen, for instance, a student attacked with dysentery while in the hardest part of the session at the university. His whole system became prostrate, and muscular activity to a very small degree would have killed him; so would the continued mental toil necessary to go on with his studies. Yet his brain was in need of exercise almost from the first appearance of his disease. He must have this or be miserable, and not likely soon to recover. An intensely interesting book fell into his hands, altogether away from his track of toil. He read day after day at this book. This was his "exercise"—that is, it was the activity of that one only part of his physical system which needed such exercise for the time. That exercise allowed all the other organs to recuperate.

Brain, Inflammation of.—This arises often from over-schooling of young boys and girls. Care should ever be taken to avoid this. Obstinate constipation in the bowels, chills and exposure, are also fruitful sources. Much worry and anxiety also bring on this serious illness. All sometimes combine to produce a bad case. Pain in the head sets in, followed by convulsive attacks; yet the trouble may be cured in many cases with comparative ease. Leeches, opium, and blistering are to be avoided as most injurious. For treatment it is well to begin at the feet; if these are clammy and cold, wrap in hot fomentation up over the knees (see Fomentation). Proceed to give a pretty warm injection of water into the lower bowel (see Enemas). This should be repeated several times, allowing it to pass off each time. If this increases the pain, try an injection of cold water. This treatment of feet and bowels is most important, and should never be neglected; it renders the treatment of the head tenfold more effective. Cold cloths may now be gently pressed for some time over the head. If the pulse is violent and feverish, let several towels be well wrung out of cold or even iced water, fold one so as to cover the entire head and back of the neck, and have the others ready, similarly folded. Press the first on gently, especially at the back of the head, so that the cooling cloth covers the head all over and soothes the violently heated brain. As soon as one towel grows warm, take a fresh cold one. Relief should come in an hour at least, but longer may be required. During the cooling see that the heat of the fomentation on the legs is well kept up; change if necessary. When the more painful symptoms abate, oil the lower part of the back, and place on it a bran poultice (as recommended in Bowels, Inflammation of). This will go far to prevent any relapse. If the symptoms recur, use the treatment again. See Brow, Weary; Eyes, Failing Sight. See also, for other brain troubles: Restlessness; Sleeplessness.