1 long green inflated 2 " " constricted 3 " yellow inflated 4 " " constricted 5 short green inflated 6 " " constricted 7 " yellow inflated 8 " " constricted The green colour of the pod, the inflated forms, and the long axis were, as in _Pisum_, dominant characters. Another experiment with two very different species of _Phaseolus_ had only a partial result. _Phaseolus nanus_, L., served as seed parent, a perfectly constant species, with white flowers in short racemes and small white seeds in straight, inflated, smooth pods; as pollen parent was used _Ph. multiflorus_, W., with tall winding stem, purple-red flowers in very long racemes, rough, sickle-shaped crooked pods, and large seeds which bore black flecks and splashes on a peach-blood-red ground. The hybrids had the greatest similarity to the pollen parent, but the flowers appeared less intensely coloured. Their fertility was very limited; from seventeen plants, which together developed many hundreds of flowers, only forty-nine seeds in all were obtained. These were of medium size, and were flecked and splashed similarly to those of _Ph. multiflorus_, while the ground colour was not materially different. The next year forty-four plants were raised from these seeds, of which only thirty-one reached the flowering stage. The characters of _Ph. nanus_, which had been altogether latent in the hybrids, reappeared in various combinations; their ratio, however, with relation to the dominant characters was necessarily very fluctuating owing to the small number of trial plants. With certain characters, as in those of the axis and the form of pod, it was, however, as in the case of _Pisum_, almost exactly 1 : 3.