First of all by an abundance of exercise and of fresh air make your boys and girls, strong, and then, in due time, they will be ready and be able to have their minds properly cultivated. Unfortunately, in this enlightened age, we commence at the wrong end—we put the cart before the horse—we begin by cultivating the mind, and we leave the body to be taken care of afterward; the results are, broken health, precocious, stunted, crooked, and deformed youths, and premature decay. One great advantage of gymnastic exercise is, it makes the lungs expand, it fills the lungs with air, and by doing so, strengthens the lungs 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. 337. _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. 338. _What amusements do you recommend for a girl?_