[1] In this climate, April and May are the best months.--ED. AM. AG.
_The Mode of Preparing the Scion_ comes next. Take from the tree from which you mean to propagate, as many branches of last year's wood as will cut into the quantity of scions that you want; but in choosing what branches to take, let the vigor of the tree guide you, in some measure. If it be a healthy, flourishing, and young tree, take your branches from the outside shoots, for the upright ones at the top, or those near the middle, are more likely to produce wood than fruit. Yet do not take branches from the very lowest part of the tree, if you can avoid it, as these are sure to be more puling in their nature. In case the tree be old or weakly, then choose the most vigorous of its last year's shoots, no matter where they grow. Keep these branches uncut until you arrive at the season for grafting, keeping them, in the meanwhile, buried in dry mould; and when that season arrives, take them up and cut them into the proper lengths for grafting. The middle part of each branch will generally be found to be the best; but your branches may be scarce and few in number, and then make use of every part. Each scion should have from three to six eyes on it, but six will, in all cases, be quite enough, as there is no use in an extraordinary length of scion; but, on the contrary, it may be productive of much mischief, by overloading the head with young shoots and leaves as summer advances, and thereby making it more subject to accident from high winds or heavy rains.
_The Operation of Grafting_ is performed many ways, though none of them differs from any of the others in the _main principle_, which is that of bringing the under or inner bark of the scion to bear upon the same bark of the stock. The sap of the stock flows upward toward the scion, and it will flow on into the scion, provided it find no interruption. Here, therefore, is the nicety--to fit those two barks so closely, the one upon the other, that the sap shall proceed onward into the scion, just as it would have done into the amputated branch, causing the scion to supplant the branch. I shall only mention and illustrate two modes of grafting, viz., _tongue-grafting_ and _cleft-grafting_. These two it is necessary for me to speak of separately, and thoroughly to describe, for they are not both of them applicable in all cases; the former being used in grafting on small-sized stocks and small branches of trees, and the latter on large stocks and large branches.