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Radishes var (Turnip-rooted)— Radicles touched with L. Caustic

Dec 29' 1878 10º 50' a.m — germinated in saw-dust so tips only slightly damp, touched momentarily with sharply pointed stick of dry L. Caustic on one side of apex. — left in air for about 5' & then immersed in water in the dark, Seedling placed on paste board with hole in it for radicle to go through. (a)

10.50 [-] 8.30 [=] 2.10

(1) Dec. 30' 8º 30' a.m say. 22 hr' bowed from browned apex about 60º from the perpendicular.

(2) Dec 30' 8º 30' bowed from browned apex about 40º from the perpendicular

(3) 30' 8º 45' touched all other again & left in water, for none had been acted on.

31st 8º a.m decidedly curved, but I cd not distinguish any dark mark on apex.—

(4) 31' 8º a.m end shortly curled & curvature towards brown mark O

(5) 31' 8º if any difference effect. curvature towards brown side O

(6) 31' 8º I think very slight curvature from brown side?

(7) 31' 8º quite straight O

The general result very doubtful, except in 2 cases, owing to extreme thinness of radicles, scarcely possible to experiment successfully.

[118v]

(a) I tried in this fashion because with radicles of Sinapis alba, which had been in water & then gently touched with blotting paper, a momentary touch with the caustic blackened the whole tip.—

One trial, with caustic generally failed, [few words illeg] the difficulty of not injuring the extremely fine tips too much. Out of 7 radicles thus tried, one become bend after 22h at an angle of 60º, another a second at 40º & a third slightly from the perpendicular & from the side with a brown mark. cauterised side