None 2.5 i 0.3 1.5 i 0.2 0.3 i 0.1 0.6 i 0.2 Passed through Dowex-12.4 ? 0.6 1.7 ? 0.2 2.6 i 0.4 1.5 i 0.2 (H+) Dowex-12.4 ?t 0.6 1.5 i 0.2 0.4 i 0.2 0.5 i 0.2 (NH4+) Dowex-502.4 4 0.6 1.5 i 0.3 1.4 i 0.4 2.0 i 0.3 (OH-) Dowex-502.9 i 0.4 1.5 i 0.3 0.4 i 0.2 0.8 i 0.2 (acetate) of species. None of the compounds correspond to known growth or germination inhibitors. Extracts from jequirity bean embryos were prepared by soaking embryos in deionized water (1 embryo/ml) for 12 hr at 3 C. The imbibing medium which contains the inhibitor(s) was boiled to denature abrin, the protein which is toxic to