_Trimming at the time of transplanting._--Injured roots should be removed as in the general directions under Transplanting. But the idea of cutting off most of the top is a very serious error. When large trees are transplanted, which must necessarily lose many of their roots in removal, a corresponding portion of the top must be separated; but in no other case. The leaves are the lungs of the tree. How shall it have vitality if most of them are removed? It is like destroying one lung and half of the other, and then expect a man to be in vigorous health. We have often seen the most of two years' growth of trees lost by such reckless pruning. If the roots are tolerably whole and sound, leave the top so. A peach-tree needs to be trimmed much closer when transplanted, because it has so many more buds to throw out leaves. _Mulching._--This is quite as beneficial to apple-trees as to all transplanted trees. Well done, it preserves a regularity of moisture that almost insures the life of the tree. _Pruning._--The tops should be kept open and exposed to the sun, the cross limbs cut out, and everything removed that shows decided symptoms of decay. The productiveness of apple-trees depends very much upon pruning very sparingly and judiciously. There are two ways to keep an open top: one is, to allow many large limbs to grow, and cut out most of the small ones, thus leaving a large collection of bare poles without anything on which the fruit can grow;--the other method is to allow few limbs to grow large, and keep them well covered with small twigs, which always bear the fruit. The latter method will produce two or three times as much fruit as the former. The head of an apple-tree should be formed at a height that will allow a team to pass around under its branches. _Distance apart._--In a full-grown orchard, that is designed to cover the ground, the trees should be two rods (thirty-three feet) apart. When it is designed always to cultivate the ground, and land is plenty, set them fifty or sixty feet apart. You will be likely always to have fine fruit, and a crop on the land beside. Our recommendation to every one is to set out all orchards, of whatever fruit, so as to have them cover the whole ground when in maturity. Among apple-trees, dwarf pears, peaches, or quinces, may be set, which will be profitable before the apples need all the ground.