摘要: 1. Adapting the photokymograph recording of Avena test, a new technique for measuring velocity and capacity transport growth promoting substances through different tissues has been worked out. For this rate bending moment beginning curvatures are compared normal test one in which agar block is separated from plant tissue properties to be determined. Thus individual pieces these can calculated. 2. In general results van der Weij (6) were confirmed, as far coleoptile concerned. Transport independent length tissue, but amount transported decreases with increased section. narrow or wide side practically same. The lower part slightly more apical zones. 3. polarity indoleac...