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Sleep

Aug 20th / 73 / Common Red clover at night elevates the distal petiole leaflet & brings two laterals into contact & bend them inward; edges of all leaves thus put vertical & under side most exposed. Both sides silvery in water, due apparently to wax from wetted after ether —)

(Dutch clover leaves glossy above & wetted below !!!)

Bushy green-house Cytisus, in sleep raises all 3 leaflets & thus exposes edges to sky. Both upper & under surface of leaves are wetted by water. — Bearing in mind oxalis acetosella lives in shade so sleep cannot be due to protection from dew & the temp, thus [illeg]

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Oxalis sensitiva- the whole leaf sinks down & each leaflet also sinks down — The flower-peduncle sinks down.

Passiflora gracilis— first leaves hang vertically down, & both sides are wetted when placed in water.

(Nicotiana tabacum young leaves rise up vertically close to axis at night & at angle of above 45° to it during the day; observed on 2 nights.

The leaf with lamina vertical when asleep

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Oxalis acetosella, "coppery" in Hot-House — large-leaved on fern-Heap all in water silvery below & above —

The first sleep beautifully by passing leaflet, with middle of each leaflet folded inwards to pedicel of leaf; the other 2 less well but in same way — Both Surfaces of leaves seem waxy. Young leaves of the coppery closes as well as those of acetosella

Cassia in green House silvery below— wetted above.

sleeps by extraordinary movement each leaflet of compound leaves bends downwards & meets its fellow; but rotates so that upper surface meets upper & the under surface is exposed, the pair leaflets hang almost vertically down. The terminal pair are pointed a little towards base of common compound leaf, in the act of rotation. —

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Aug 25 trifolium repens upper surface of 8 leaflets like glass in water — lower surface of all 3 well wetted. In sleep the terminal one rises & turns inwards at nearly ∟' to footstalk & thus make a horizontal or inclined roof to the 2 lateral leaflets— which turn inwards so as to touch each other. Hence the terminal one does not expose its face vertically to zenith

Oct 6th Trifolium repens upper surface of terminal leaflet silvery lower not at all so!! & well wetted when dipped into water, yet the terminal leaflet is fully exposed to dew!!

White Dutch Clover. I have examined several leaves again; the upper surfaces of all 3 leaflets beautifully silvery— lower surface of all 3 leaflets completely wetted by a single dip— I can never believe useless this difference. —