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June 1' to 4th 1878. Lotus Jacobæus

Seedlings with first true leaf partially developed formed — observed under skylight as shown → [sketch] hypocotyl tied to stick

on vertical glass (see tracing). The Cots are in constant movement, & the ascending & descending never coincide so circumnutation. Movements they then apparently disturbed by obscure obscure light coming coming through dark skylight of ground glass, & from temperature (16-17C.) lower than in Hot-House. The regular movement seem to be to begin rising slowly at about 11º a.m say midday & in afternoon from between 3º & 4º & 5º & 6 the upward movement is very rapid. They must begin to descend & to descend very rapidly very early in the early morning for by by 6º 45' a.m, they were low down & the Cot. horizontal, they then continued to descend slowly till about 11º a.m, when the slow ascending movement recommenced.

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On June 2d a curious anomaly anomaly occurred (see Tracing) for between 6º 45' & 11º 30' a.m the Cots rose & then descended till 2º P.m, when the great daily rise. commenced; A small ellipse being then formed, as well as the greatly great daily usual ellipse.

On the 4th of June after rising in usual manner from 11º to 11º 30' a.m. it zig-zagged with short lines, (of which only a few of the first are given) every half or whole hour for whole rest of days, & did not rise up vertically at night; nor did any any of the many other seedlings. Nor

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Lotus Jacobæus

did they on following night of the 5th.— As temperature on the 4th. was generally 17 1/2 C, & rather warmer than on previous days I doubt whether temperature was the cause: one more probably it was the want of sufficient illumination during several during the 3 previous days, & as the Cots. zig-zagged all day growth had not ceased.

During the 6th the pot was placed in greenhouse & exposed to the sun & at night the Cots slept pretty well, i.e. stood up at a high angle, but not I think so high an angle as formerly.