1. Schwartz, D., Bot. Gaz., 111, 123 (1949).
2. A search through Maize Genetics Cooperation News Letters did not reveal any such mutants (personal communication from Dr. E. H. Coe, jun.).
3. Röbbelen, G., Naturwiss., 44, 288 (1957).
4. Highkin, H. R., Plant Physiol., 25, 294 (1950).
5. Allen, Mary Belle, Brookhaven Symp. Biol., 11, 339 (1958).