"Descriptions of New Species of Quadrupeds inhabiting North America." Journal of the Academy of Natural Sciences, vol. viii, pt. ii, pp. 280-329. Philadelphia, 1839-1842.

Read, Oct. 5, 1841.

31. Audubon, J. J., and Bachman, J.:

"Descriptions of New Species of Quadrupeds inhabiting North America." Proceedings of the Academy of Natural Sciences, vol. i (Oct., 1841), pp. 92-103. Philadelphia, 1843.

32. Audubon, John James, and Bachman, John:

"Description of a new North American Fox, genus Vulpes, Cuv., (Utah)." Proceedings of the Academy of Natural Sciences, vol. vi, pp. 114-116. Philadelphia, 1852-1853.

33. Audubon, John James:

"Earthquake in Kentucky." Reproduced in Magazine of American History, vol. 16, pp. 342-344, with portrait. New York, 1886.

See "The Earthquake," Ornithological Biography, vol. i.

c. Epistolary Articles