THE DOME.

This is the form which the Elm seems most prone to assume when it stands from the time it was a seedling until it attains its full stature in an open space. It then shows a broad hemispherical head, formed by branches of nearly equal size, issuing chiefly from a common centre, diverging first at a small angle, and gradually spreading outward with a curve that may be traced throughout their length. A considerable number of our roadside elms are specimens more or less imperfect of this normal type.