"The slipping process itself is easy. Suppose we have a big, old geranium from which to take our slips. It is full of branches. These branches or stems have around them at intervals rings called nodes. The space between two nodes is called an internode. On the nodes are what seem to be small leaves. Press one aside, notice between it and the stem what appears to be a very small bud. Here a new shoot can start. "So choose a branch, pick off all the large leaves except two at the extreme end. If there are more than two, choose the two smallest leaves. Now it is ready to cut. About four inches down the stem cut it off between two nodes. Do not cut straight across the stem but cut slantwise. "You have now as I have in my hand, a geranium slip which is four inches long. At one end of the stalk are two leaves; the other end is cut obliquely across. Before you plant this slip look between the two leaves and see if there is a small bud. If so, and it is all green, leave it. For this green means that as the bud develops only leaves will unfold. If you see any other colour in the bud, pinch it out with your fingers. The colour tells us that the bud is a flower bud. If this be left on the slip, all the strength of the little plant will be taken up in forming the blossom. A new plant is not strong enough to stand this. It needs all its power for plant growth. "Plant the slip in your window box, burying it in earth above the first node; that is, the node just above the cut. Thus you have buried in the earth the place where roots will form. "Crowd the slips in, three or four inches only apart. They should not be exposed to the full glare of the sun at first. Some gardeners say to let the slips wilt before watering. But it is quite safe to water a little from the first. Do not soak the soil, however, or the young plants will decay. "Now the slips may be put right into a window box, or into these flats. I would not place them immediately in a sunny window. But place them where the sun does not shine directly. It is excellent to leave window boxes and newly potted plants outdoors for a time, until in the fresh air they get accustomed to their new living conditions." "Shall we fix up the school window boxes now?" asked Josephine. "Yes, we will get right at that. But first I will give you a window-box talk. "The most satisfactory way to grow plants in the schoolroom and in many cases, at home, is in the window box. The window box means the possibility of easily caring for a number of plants in a small space. Plants in pots take much more space than the same number of plants in a window box. "It is the cleanest way, too. You are all familiar with the sight of a pot covered with crêpe paper stained and discoloured from water spilt upon it and moisture given off from the porous pot.