Causes of the Decadence of Hemlock at the Menominee Indian Reservation, Wisconsin

To determine the causes of the decadence of the eastern hemlock (Tsuga canadensis (L.) Carr.) on the Menominee Indian Reservation, in east-central Wisconsin, a detailed examination of the root systems of a number of decadent or dead trees was made during the summer of 1939. The conclusion is reached that the prolonged drought period of 1930-37 was the primary cause of the decadence and death of hemlock on the reservation.