1. Lincoln, R. G., Mayfield, D. L., and Cunningham, A., Science, 133, 756 (1961).
2. Lincoln, R. G., Mayfield, D. L., Cunningham, A., Hutchins, R. O., Hamner, K. C., and Carpenter, B. H., Nature, 195, 918 (1962).
3. Mayfield, D. L., Lincoln, R. G., Hutchins, R. O., and Cunningham, A., J. Agric. and Food Chem., 11, 35 (1963).
4. Mayfield, D. L., personal communication; Rep. Fifth Intern. Conf. Plant Growth Regulators, Centre National de la Recherche Scientifique, Gif-sur-Yvette (S.-et-O.), France, July 1963 (in the press).
5. Lincoln, R. G., Cunningham, A., and Hamner, K. C. (unpublished results).