The VENTILATION of a nursery is of paramount importance. There ought to be a constant supply of fresh pure air in the apartment. But how few nurseries have fresh, pure air! Many nurseries are nearly hermetically sealed--the windows are seldom, if ever, opened; the doors are religiously closed; and, in summer time, the chimneys are carefully stuffed up, so that a breath of air is not allowed to enter! The consequences are, the poor unfortunate children "are poisoned by their own breaths," and are made so delicate that they are constantly catching cold; indeed, it might be said that they are labouring under chronic catarrhs, all arising from Nature's laws being set at defiance. The windows ought to be large, and should be made to freely open both top and bottom. Whenever the child is out of the nursery, the windows ought to be thrown wide open; indeed, when he is in it, if the weather be fine, the upper sash should be a little lowered. A child should be encouraged to change the room, frequently, in order that it may be freely ventilated; for good air is as necessary to his health as wholesome food, and air cannot be good if it be not frequently changed. If you wish to have a strong and healthy child, ponder over and follow this advice. I have to enter my protest against the use of a stove in a nursery. I consider a gas stove _without a chimney_ to be an abomination, most destructive to human life. There is nothing like the old-fashioned open fire-place with a good-sized chimney, so that it may not only carry off the smoke, but also the impure air of the room. Be strict in not allowing your child either to touch or to play with fire; frightful accidents have occurred from mothers and nurses being on these points lax. The nursery ought to have a large fire-guard, to go all round the hearth, and which should be sufficiently high to prevent a child from climbing over. Not only must the nursery have a guard, but every room where he is allowed to go should he furnished with one on the bars. Moreover, it will be advisable to have a guard in every room where a fire is burning, to prevent ladies from being burned. Fortunately for them, preposterous crinolines are out of fashion: when they were in fashion, death from burning was of every-day occurrence; indeed, lady-burning was then to be considered one of the institutions of our land! A nursery is usually kept too hot; the temperature in the winter time ought _not to exceed_ 60 degrees Fahrenheit A _good_ thermometer should be considered an indispensable requisite to a nursery. A child in a hot, close nursery is bathed in perspiration; if he leave the room to go to one of lower temperature, the pores of his skin are suddenly closed, and either a severe cold or an inflammation of the lungs, or an attack of bronchitis, is likely to ensue. Moreover, the child is both weakened and enervated by the heat, and thus readily falls a prey to disease.