[1] MÉmoires sur la Louisiane. Butel-Dumont. Vol. II, pp. 271-273. Paris, 1753.

[2] Hartt: American Naturalist, February, 1879, pp. 83-86.

[3] Barber: American Naturalist, Vol. X, p. 412.

[4] Tenth Annual Report U. S. Geological Survey of the Territories, p. 394.