In all grafting, whether of roses or other woody plants, it is necessary that the buds of the graft should be completely dormant. In the stock, on the other hand, a slight and partial awakening of the vital action at the time the graft is put on seems rather beneficial than injurious. Suckers In this mode of increasing roses, Nature, rather than the cultivator, may be said to do the work of propagation. Many sorts of roses throw out spontaneously long underground stems, from which roots soon issue, and which soon throw up an abundance of shoots above ground. When these suckers, as they are called, are separated from the parent, and planted apart, they make a strong growth, but rarely form plants so symmetrical as those raised from cuttings or layers. RAISING NEW VARIETIES.-A layer, a cutting, a bud, a graft, and a sucker, are detached portions of an individual plant; and the plant resulting from them is of precisely the same character with the parent. But, when the seed germinates, it is not the reproduction of the same individual, but it is the birth of a new one. The offspring will show a family likeness; but it is by no means probable, at least in the case of the rose, that its features will be precisely the same with those of its parent. Plant the seeds of a rose; as, for example, of the Hybrid Perpetual, La Reine, and of the resulting seedlings: all will probably show traces, more or less, of their origin; but the greater part will be far inferior to the parent. Some will be sin gle; many will be half double; and, among a large number of seedlings, we shall be fortunate if we find two or three equal in beauty to La Reine herself. Nor is it at all likely that even these will be her precise counterparts. They may possibly be her equals; but they will not exactly resemble her: and thus we obtain a new and valuable acquisition to the list of roses. Now, if, instead of singly gathering and sowing the seeds of La Reine, we first impregnate its flowers with the pollen of a different variety, such as the Giant of Battles, our chance of a valuable result is increased, because, if we are fortunate, we combine the desirable qualities of two sorts. It is not impossible that we may thus produce a rose combining the vigorous growth and large globular flowers of La Reine with some portion of the vivid coloring of the Giant of Battles. It is by the raising of seedlings with or without hybridization that the innumerable roses that decorate our gardens and fill the catalogues of nursery-men have been produced. M. Laffay, to whom more than to any other single cultivator we are indebted for bringing into existence the splendid family of the Hybrid Perpetual roses, raised in one year more than three hundred thousand seedlings. Of these, all but a small portion were, no doubt, pulled up, and thrown away as worthless, after their first : blooming; the rest were allowed to stand for further trial and if, finally, a score or two of roses really distinct and valuable were obtained, the year's culture may have been regarded as a great success. It requires a long time before the character of a seedling-rose can be thoroughly ascertained. M. Margottin, another eminent rose-grower, says that no conscientious cultivator will permit a seedling to pass out of his hands until he has given it a six-years' trial. The raising of roses from seed is an occupation of so much interest, that few who have fairly entered upon it. have ever willingly abandoned it. Many choice roses have been raised by amateurs; and those who have the time and means to enter on a large or a small scale upon this pursuit will find it a source of abundant enjoyment. In the next chapter, we shall point out the combinations from which the existing classes of Hybrid roses have sprung; and hereafter, when we come to the description of these classes, we shall add a few suggestions as to other combinations likely to produce good results. Some roses bear seed freely, while others can hardly be induced to bear it at all. The hybridizer should take note of their peculiarities in this respect, or he will throw away much labor and patience; for it is a thankless task to hybridize a rose, which, after all the labor spent upon it, will not produce a single seed-vessel. Fortunately, many of the best roses bear seed abundantly; and La Reine, General Jacqueminot, Jules Margottin, Madame Laffay, and many others as good as these, may confidently be relied on. It is a good rule, that no seedling-rose is worth preserving, or at least worth propagating, that is not, in some one point, superior to or distinct from any other rose existing. Roses should be hybridized immediately after they open, or they will become thoroughly fertilized with their own pollen, and the object of the operation will thus be defeated. The best time of the day is about ten o'clock in the morning, as soon as the sun has dried the dew from the centre of the flower. The pollen of the rose whose qualities it is wished to impart may be applied to the pistils of the maternal or seed-bearing flower with a camel's-hair pencil; or one rose may be held over the other, and tapped with the finger till the pollen falls upon the pistils of the seed-bearer. Roses are uncertain as to the production of pollen. In some seasons and some situations it is abundant, while in others it is produced very scantily. The impregnated roses may be marked by strings or labels tied to their stems. The seed should not be gathered till the first frost; and, to insure its ripening, the plant should |