RECENTLY, Fletcher, Alcorn and Raymond1 presented evidence that gibberellins had no effect on the nodulation of white clover (Trifolium repens) grown either in aseptic agar or in soil. In concentrations from 1 to 1,000 p.p.m., gibberellic acid was also without effect on the growth of the nodule-forming organism Rhizobium trifolii. These combined results seemed to contradict a previous report of Thurber, Douglas and Galston2, who had found a marked depressive effect of potassium gibberellate on nodulation in dwarf beans (Phaseolus vulgaris).