Arbor Vitais, to give the very finest effect, and make a thick, impervious mass of verdure, should have their lower branches growing out from very near the roots; and these trailing branches should be partially buried in the earth, when they will strike down new roots, and throw up shoots; each branch thus buried, forming as it were, a separate tree.

If there are no branches trailing on the ground, those nearest the earth may be bent down and pinned into the earth with stout forked sticks, where they will soon root, if kept mulched and moist. No trimming or cutting in can make the tree so thick and impervious as this method, or give it so fine a pyramidal form. A seedling Arbor Vitas, comparatively new, called the Warrenhv, is much *stonter in its habit, and thicker in its growth, owing to its much shorter joints than our native tree, some fine large plants of which we have rccefved from John J, Stihson, Esq.. a distinguished amateur of horticulture in Providence, R. I. The true method of setting hemlock* to have . them form a thick impenetrable mass of beautiful folinge, is to plant them in clumps, or hills, with three to fire plants In a hill, each plant from a half foot to afoot and a half apart. Set in this way, each tree throws Ha branches outward to the light and air, and thus makes a very dense thicket of green. We were indebted for this hint to lRA Cleveland, Esq., a lawyer of Dedham, and Secretary of the Norfolk Insurance Company; a gentleman of great taste in architecture and landscape gardening, who will show any one interested, some of the finest specimens of hemlocks grown in this way, eye ever beheld, fully equal in beauty to any exotic evergreen known.

Heading In the tree nearly down to the roots, will give much the same growth and effect, though the former method is much preferable.

The American Yew may be trained so as to make a low hedge, or a single oval, or pyrami-dal,'of the most rare and ivied tint of green, which is rendered still more striking, late in the season, by the contrast of its brilliant scarlet berries.

The mulching we employ for evergreens, viz, fine hub chips, spent tan, or common chips, and chip dust - forms the very best manure that ev-ergrvens can have. Jambs Richardson, Jr.