The height of the tree.
The part of the height that is composed of tree tops.
The umbrella shape or dome shape of the top.
The gracefully drooping branches of the outer part of the top.
Try to find other trees with tops like that of the elm.
The diameter of the trunk.
The diameter is almost uniform up to the branches.
The branches all come off from one point, like the ribs of an umbrella.
The thick bark, that of the old trees being marked by deep furrows.
The birds that make their nests in the elm.