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Dec. 23 & 24th 1877 Red Cabbage— seedling under ground

N.B. The hypo-cot stem come out of seed much [covered] or doubled & lower part grows very quickly.

Dec. 23d uncovered germinating seed exactly 1/4 of inch beneath surface — cotyledons yet partially without capsule— fixed glass filament to basal part of hypo-cot stem & placed triangle of card on ground [sketch] cots seed

I tied with silk the arc together at dotted line. Kept in dark & traced on Horizontal glass — watered seedling well fixed by roots, & pressed down ground all round —

Dec. 23' First dot at 9° 23' a.m. See tracing (Q) & last dot this day 10°. 45' P.m; travelled in strongly zig-zag line in semicircular course & by 6° 45' next morning Dec. 24' had completed what may be called an imperfect circle. This day r I believe that chief movement of basal part of Hypocot. stem was from the cots, nutating at the same time from side to side; but from Cots. being tied the basal part seem to get in some degree twisted.

Next day Dec. 24th moved, rather zig-zag in nearly same course, due I believe to the basal part of stem straightening itself. After 3° P.m. moved extremely little & was sometimes stationary, & we shd remember that glass filament fixed near base of hypocots stem. So that as with climbing plants lower part of stem become fixed or stationary— During night of 24th moved on a little in nearly same course & next morning was almost stationary

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Dec. 25th.— Red Cabbage Seedlings

(Dec. 25 The seedling of which the movements of the basal part of Hypocot stem have been described & traced in last page, had glass filament removed, & affixed horizontally on summit & transversely to the arc (still tied) so as to see if this upper part goes on nutating, the lower part having become stationary— Traced as before on Horizontal glass in darkness. See Tracing (R). Tracing magnified 58. 3/8 times Between 8° 50 & 1° certainly nutated & this is interesting as it shows that upper part of hypocot. stem goes on nutating after basal part has ceased like a nutating plant.— At 3°. top of arc was almost on a level with ground. Between 1° & 8° 45 went zig-zag course in same direction., & then turned abruptly back & travelled so all night. I Know not cause but supposes due to Cots. being tied to base of stem, for the top of the arc was not quite level & as long as the upright basal part. [sketch] & the growth of this flattened arc apparently carried with it in one direction the horizontal glass filament