3. Jenkins gave the writer a selfed ear of inbred Hy that was segregating for what appeared to be a green seedling character. This new recessive mutant is linked with either C or R. Inasmuch as A B pl plants homozygous for this gene have a deep bronze color instead of the usual red; this gene has been tentatively designated "bronze" (symbol bz). A b pl and A b Pl plants homozygous for bz are not green but have a bronze color at the base of the culm. Some strains of A b pl and A b Pl plants homozygous for bz have chocolate colored anthers while other strains have green anthers. Some interactions with the R alleles may be involved here. The effect of bz on the color of A B Pl plants or on pericarp color has not yet been determined. The effect of bz on aleurone color is also unknown since it arose in a line homozygous for recessive c and r and its being linked to one of these factors makes the aleurone effect difficult to determine. The bz gene has a rather remarkable pleiotropic effect. In addition to affecting the anthocyanin system it also causes considerable pollen abortion. The sterility effect of bz is variable from season to season. At Arlington, Virginia in the summer of 1940 the amount of aborted pollen was so great that the anthers were shriveled and many failed to dehisce while in the summer of 1941 at Cold Spring Harbor little or no pollen abortion was evident.