There is a famous remedy for the destruction of fleas, manufactured in France, entitled “_La Poudre Insecticide_,” which, although perfectly harmless to the human economy, is utterly destructive to fleas. Bugs are best destroyed by oil of turpentine; the places they do love to congregate in should be well saturated, by means of a brush, with the oil of turpentine. A few dressings will effectually destroy both them and their young ones. 255. _Suppose a child to have had an attack either of inflammation of the lungs or of bronchitis, and to be much predisposed to a return: what precautions would you take to prevent either the one or the other for the future?_ I would recommend him to wear fine flannel instead of lawn shirts; to wear good lamb’s-wool stockings _above the knees_, and good, strong, dry shoes to his feet; to live, weather permitting, a great part of every day in the open air; to strengthen his system by good nourishing food—by an abundance of both milk and meat (the former especially); to send him, in the autumn, for a couple of months, to the sea-side; to administer to him, from time to time, cod-liver oil; in short, to think only of his health, and to let learning, until he be stronger, be left alone. I also advise either table salt or bay salt to be added to the water in which the child is washed with in the morning, in a similar manner as recommended in answer to the 123d question. 256. _Then do you not advise such a child to be confined within doors?_ If any inflammation be present, or if he have but just recovered from one, it would be improper to send him into the open air, but not otherwise, as the fresh air would be a likely means of strengthening the lungs, and thereby of preventing an attack of inflammation for the future. Besides, the more a child is coddled within doors, the more likely will he be to catch cold, and to renew the inflammation. If the weather be cold, yet neither wet nor damp, he ought to be sent out, but let him be well clothed; and the nurse should have strict injunctions _not_ to stand about entries, or in any draughts—indeed, not to stand about at all, but to keep walking about all the time she is in the open air. Unless you have a trustworthy nurse, it will be well for you either to accompany her in her walk with your child, or merely to allow her to walk with him in the garden, as you can then keep your eye upon both of them. 257. _If a child be either chicken-breasted, or if he be narrow-chested, are there any means of expanding and of strengthening his chest?_