(95 (100

Ch 5)

Zea

almost overpowered by heliotropism.

Radicle Two seeds which had germinated on damp sand, which & were turned upside down when their radicles protruded about 1/20th of an inch, & Filaments were affixed to their tips of these two radicles These now standing stood almost upright, & the movements of the bead at the end were traced in the usual manner. The radicle of the first seed moved in the same general direction; in a slightly zig-zag manner, course during after the first 10 hours; during the next 38 hours in moved back in a nearly parallel & strong zig line course & in in a strongly zig-zag line ; but on examining the tip it as well as that of the second seed was found to be, though often watered, slightly shrivelled, so that the latter later observations are not trustworthy. The radicle of the second seed moved in the same general course during the whole 48 hours, due no doubt to geotropism; but from the first the line traced was strongly zig-zag. We may therefore infer that the radicles of maize under these circumstances circumnutate, though the movement is generally modified & almost overpowered by geotropism.) (Fourteen grains which had with protruded their radicles were