It would be well for each boy to have a separate room to himself, and each girl a separate room to herself. If two boys are obliged, from the smallness of the house, to sleep in one room, and if two girls, from the same cause, are compelled to occupy the same chamber, by all means let each one have a _separate_ bed to himself and to herself, as it is so much more healthy and expedient for both boys and girls to sleep alone. The roof of the bed should be left open—that is to say, the top of the bedstead ought not be covered with bed furniture, but should be open to the ceiling, in order to encourage a free ventilation of air. A bed-curtain may be allowed on the side of the bed where there are windy currents of air; otherwise bed-curtains and valances ought on no account to be allowed. They prevent a free circulation of the air. A youth should sleep on a horse-hair mattress. Such mattresses greatly improve the figure and strengthen the frame. During the daytime, provided it does not rain, the windows must be thrown wide open, and, directly after he has risen from bed, the clothes ought to be thrown entirely back, in order that they may become, before the bed be made, well ventilated and purified by the air: “Do you wish to be healthy?— Then keep the house sweet; As soon as you’re up Shake each blanket and sheet. Leave the beds to get fresh On the close-crowded floor; Let the wind sweep right through— Open window and door. The bad air will rush out As the good air comes in, Just as goodness is stronger And better than sin. Do this, it’s soon done, In the fresh morning air,— It will lighten your labor And lessen your care. You are weary—no wonder; There’s weight and there’s gloom Hanging heavily round In each overfull room. Be sure all the trouble Is profit and gain, For there’s headache, and heartache, And fever, and pain, Hovering round, settling down In the closeness and heat: Let the wind sweep right through Till the air’s fresh and sweet. And more cheerful you’ll feel Through the toil of the day; More refreshed you’ll awake When the night’s pass’d away.”