One great advantage of gymnastic exercise is, it makes the chest expand, it fills the lungs with air, and by doing so strengthens them amazingly, and wards off many diseases. The lungs are not sufficiently exercised and expanded; boys and girls, girls especially, do not as a rule half fill their lungs with air; now air to the lungs is food to the lungs, and portions of the lungs have not half their proper food, and in consequence suffer. It is very desirable that every boy and girl should, every day of his or her life, and for a quarter of an hour at least each time, go through a regular _breathing exercise_--that is to say, should be made to stand upright, throw back the shoulders, and the while alternately and regularly fully fill and fully empty the lungs of air. If this plan were daily followed, the chest and lungs would be wonderfully invigorated, and the whole body benefited. 345. _Is playing the flute, blowing the bugle, or any other wind instrument, injurious to health_? Decidedly so: the lungs and the windpipe are brought into unnatural action by them. If a boy be of a consumptive habit, this will, of course, hold good with tenfold force. If a youth must be musical let him be taught singing, as that, provided the lungs be not diseased, will be beneficial. 346. _What amusements do you recommend for a girl_? Archery, skipping, horse exercise, croquet, the hand-swing, the fly-pole, skating, and dancing, are among the best. Archery expands the chest, throws back the shoulders, thus improving the figure, and develops the muscles. Skipping is exceedingly good exercise for a girl, every part of the body being put into action by it Horse exercise is splendid for a girl; it improves the figure amazingly--it is most exhilarating and amusing; moreover, it gives her courage and makes her self-reliant Croquet develops and improves the muscles of the arms, beautifies the complexion, strengthens the back, and throws out the chest. Croquet is for girls and women what cricket is for boys and men--a glorious game. Croquet has improved both the health and the happiness of womankind more than any game ever before invented. Croquet, in the bright sunshine, with the winds of heaven blowing about the players, is not like a ball in a stifling hot ball-room, with gas-lights poisoning the air. Croquet is a more sensible amusement than dancing; it brings the intellect as well as the muscles into play. The man who invented croquet has deserved greater glory, and has done more good to his species, than many philosophers whose names are emblazoned in story. Hand-swing is a capital exercise for a girl, the whole of the body is thrown into action by it, and the spine, the shoulders, and the shoulder-blades, are especially benefited. The fly-pole, too, is good exercise for the whole of the muscles of the body, especially of the legs and the arms. Skating is for a girl excellent exercise, and is as exhilarating as a glass of