Walking is excellent ; unsurpassed in benefit to the system if one can afford time to get enough of it; a pleasant country, moderate weather, and good company being almost essential to its advantages. Beginners must not walk too fast or too far. Stop at the end of the first hour, and sit down for five minutes. Rest ten minutes at the end of the second, and every successive hour, if you go on long ; and never, while unaccustomed to pedestrianism, go more than three miles in one hour.

Riding on horseback is an admirable exercise; but it leaves neglected a number of useful muscles, which are brought into action in walking. Farmers in some places ride on horseback almost always, if they have to go a mile or more ; and, in consequence, they become poor walkers. They often almost wear out in an hour's stroll over hard pavements in town. Bicycling much resembles riding in effect.

Rowing is a capital exercise. More muscles are used in it than in walking or riding on horseback ; hands, arms, back, legs, and feet are all strenghened by it.

Skating is as wholesome in itself as any exercise can be. Always in a cold, bracing atmosphere (except roller skating, of course, which may be anywhere), even in a "rink," with freedom and variety of movement of the body and limbs, yet without violence, it is excellent for both sexes.

Swimming, as an exercise, apart from the good obtained from bathing, is less favorable. The pressure of the water, and its temperature if cool or cold, force the blood more or less from the surface of the body to the head. Swimming rapidly is, also, a violent exercise. But every boy and girl should learn to swim as early in life as possible, so as to lessen the danger when " overboard " unexpectedly anywhere.

Out-of door games, as lawn tennis, croquet, cricket, base-ball, are all, in moderation, not only enjoyable, but wholesome in their effect upon the bodily condition. Exhilaration of mind makes all exercise more beneficial. It is astonishing what an amount of work people will do under the name of play. A Chinese mandarin, on seeing a number of English gentlemen engaged actively in a game of base ball or cricket said, "In my country we always pay people for taking so much trouble to amuse us." No treadmill, however, would ever build up muscle like the cricket ground.

Healthy Breathing

Little thought is needed, for every one to see that for good breathing there must be sound lungs and air-tubes, and strength in the muscles of the chest, as well as pure air. Our breathing muscles can be strengthened by exercise. All active muscular movements of any part of the body, but especially brisk walking or running, quicken the action of the heart; and, as the blood then goes more rapidly through the lungs, it needs to be, and is, aired by quicker breathing.

Using the voice a great deal (as in speaking or singing) in early life, promotes the growth of the lungs and the strength of the breathing muscles. Those who belong to consumptive families should, while young, be accustomed to active out-of-door habits ; and for them, reading or speaking aloud or singing (vocal gymnastics) will be wholesome exercise ; that is, so long as they are well. When the lungs are actually diseased, active efforts of all kinds should be avoided.

Pure air, and plenty of it, is a constant necessity for health. The application of this truth belongs in many ways to our every-day life, especially, of course, within doors. Out of doors we can usually trust to nature to supply us a fair share of whole-some air, if, of course, we keep away from localities in which the air is vitiated by bad sanitation or other unwholesome surroundings. .

Personal Cleanliness

The importance of cleanliness in all the actions of life is almost too apparent to need mention, were it not that it is so much neglected by many. Not only cleanliness of the skin, the hair, the teeth, the nails, and the clothing is necessary, but also cleanliness in all our habits. By this means we shall avoid many diseases which are entirely due to dirt of various kinds. The old and excellent definition that dirt is matter in the wrong place suggests that it Should be removed; and when we remember that this dirt may consist of irritating particles of minerals in the form of dust, or of poisonous chemicals, and, more fatally, of disease germs, we shall be greatly impressed with the necessity of being clean.