719. Plants require much light and fresh air; a light garret is an excellent place for them; even those which will not bear the outer air, must have the air of the room frequently freshened by ventilation, to preserve them in health. They should not stand in a draught of air. In frosty weather the windows should be kept close, and at night, the shutters. In sharp frost, instead of stirring out the fire, leave a little on retiring to rest, with a guard before it for security. As a general rule, never water plants while the sun shines. The time should be in the evening, or early in the morning, unless it be confined to watering the roots, in which case transplanted plants, and others in a growing state, may be watered at any time; and, if they are shaded from the sun, they may also be watered over the tops. The water, if taken from a well or cold spring, should be exposed one day to the sun, otherwise it will chill the plants. A small quantity only should be applied at a time, that it may have the effect of refreshing rain. Rain water is the best for plants; next river water; hard spring water is the worst. 720. _To air Plants, and ventilate Rooms wherein they are contained._--Plants should have air, every day in the year, to make them grow well; but this matter, in sitting-rooms, will not of course be regulated for their sakes, especially in the colder seasons. Wherever placed, however, some attention should be paid to airing and ventilating the rooms regularly, by opening the windows, and occasionally the doors, in order to excite a free circulation of air. This should be done to a certain extent every day, according to the state of the weather, except in the time of severe frost, when it would not be advisable to admit external air. But at such times, if bad weather be of long continuance, the rooms may be ventilated by means of the doors, and by exciting a current of air in the passages, or other parts of the house. In very severe frost, or in a continuation of damp weather, moderate fires should be made for the sake of the plants, if placed in rooms not occupied. The window shutters should also be closed at night. 721. _Hints to Lovers of Flowers._--A most beautiful and easily-attained show of evergreens may be had by a very simple plan, which has been found to answer remarkably well on a small scale. If geranium branches taken from luxuriant and healthy trees, just before the winter sets in, be cut as for slips, and immersed in soap-water, they will, after drooping for a few days, shed their leaves, put forth fresh ones; and continue in the finest vigor all the winter. By placing a number of bottles thus filled in a flower-basket, with moss to conceal the bottles, a show of evergreens is easily insured for the whole season. They require no fresh water.