When the plants have made about six inches of growth they can either be placed in another house, or in hot-bed frames, if they are to be kept under glass. The usual manner of keeping them in pots during summer, shifting them into larger and larger sizes, I consider injurious to the free development of the plants, as the roots are distorted and cramped against the sides of the pots, and cannot spread naturally. I prefer shifting them into cold frames, in which beds have been prepared of light, rich soil, into which the young plants can be planted, and kept under whitewashed hot-bed sashes for a while, which, after several weeks, may be removed, and only a light shading substituted in their place, which, after several weeks more, can also be removed. Thus the young plants are gradually hardened, their roots have a chance to spread evenly and naturally, without any cramping; and such plants, although they may not make as tall a growth as those kept under glass all the season, will really stand transplanting into the vineyard much better than those hot-house pets, which may look well enough, but really are, like spoiled and pampered children, but poorly fitted to stand the rough vicissitudes of every-day life. The young plants should be lightly tied to small sticks provided for the purpose, as it will allow free circulation of air, and admit the sun more freely to the roots. In the fall, after their leaves have dropped, they should be carefully taken up, shortened to about a foot of their growth, and they are then ready either to sell, if they are to be disposed of in that way, or for planting into the vineyard. They should, however, be carefully assorted, making three classes of them--the strongest, medium, and the smallest--each to be put separate. The latter generally are not fit to transplant into the vineyard, but they may be heeled in, and grown in beds another year, when they will often make very good plants. Heeling in may be done as shown in Figure 2, laying the vines as close in the rows as they can conveniently be laid, and then fill the trench with well-pulverized soil. They can thus be safely kept during the winter. [Illustration: FIG. 2.] I have only given an outline of the most simple and cheapest mode of growing plants from single eyes, such as even the vineyardist may follow. For descriptions of more extensive and costly buildings, if they desire them, they had better apply to an architect. I have also not given the mode of propagating from green wood, as I do not think, plants thus propagated are desirable. They are apt to be feeble and diseased, and I think, the country at large would be much better off, had not a single plant ever been produced by that method.