Cedar and hemlock also are commercially valuable.
A few, such as hemlock berries, are poisonous.
The hemlock prefers rather dry and elevated situations, often forming woods on the declivities of mountains.
The Blue Ridge and Newer Appalachian regions are covered with pine, hemlock, white oak, cherry and yellow poplar; while that portion of these provinces lying in the S.W.
In Newton Upper Falls, Echo Bridge (of the Boston Aqueduct) crosses the Charles near the falls in Hemlock Gorge Reservation of the Metropolitan Park system.