1. Shelley, W. B., and Juhlin, L., J. Chromatog., 22, 130 (1966).
2. Patton, A. R., and Foreman, E. M., Science, 109, 339 (1949).
3. Kuno, Y., Human Perspiration (Charles C. Thomas, Springfield, 1956).
4. Rothman, S., Physiology and Biochemistry of the Skin (University of Chicago Press, Chicago, 1954).