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Nov. 3d 77

Trifolium resupinatum

(Used)

Nutation of stem alone. Selected young shoot & fixed filament of glass to one side, (Kept in almost darkness,) traced on [sketch] vertical glass during 7° from 9° 26 to 4° 30' — Tracing Tracing magnified but not very greatly — During this time went down thrice & up twice or thrice or horizontally transversely — no doubt about nutation

(Nov. 5th The plant was put yesterday into greenhouse, today I fixed glass-filaments to terminal to two & lateral leaflets of leaves with very long petioles, & secured the basal [sketch] part of petiole of one to sticks — & the summit of petiole of the second leaf ─ The plant was put into dark room. & fr at 9°. 12' a.m.

At 11° 30' the leaves seem to be gong asleep, especially the lateral leaflets, & at 1° 55' there cd be no doubt on this head. Both leaves followed analogous course, first traveling laterally or laterally & abruptly downwards viz at 1° & then again to left & at 2°, & at 2°. 40' upwards — I cannot decide whether this was all sleep-movement; — but I think some nutation. From this doubt I have not kept diagram)

At 2° 40' plant was put in S.W window with sun shining, & at 4° qu leaves quite awake.)

(Nov. 6th These same 2 lateral leaflets, recurved as above described were left facing the N.E window & their movements traced on

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Nov. 6th

Trifolium resupinatum

vertical glass. The movements of the 2 closely analogous, showing that it is the leaflet & not the main petioles which chiefly move; both moved far downwards till 3°, whence at 4° both had greatly risen, & continued to rise till 7° 15 when they began to go to sleep; & the point of glass-filament moved off glass. I also observed one of these lateral leaflets from 7° 22' to 10° 30' P.m. & during this time first moved to left, which was continuing to go to sleep & then downwards— Probably move a little all night.—

Considering the previous observation, there is source of error from heliotropism, but comparing the tracing of the same 2 leaves in complete darkness, made yesterday; which was complicated by the leaflets going to sleep, there is almost certainly a quotidian movement of the leaflets up & down.─