[35]

May 28 1874 ✔ Melilotus cœulea (Kew) Bloom

both sides of all 3 leaflets silvery on both sides

Silver destroyed by Ether.— I can perceive not much change at 9˚ 20', except that in many of the leaves all 3 leaflets rise & approach each other.

(Jun 7th 9˚ 50' do, in very few of the leaves, the all three the leaflets rise a little up.)

(July 6th, out of health, — but some of terminal leaflets become vertical— very irregular, other terminal leaflets rise up, without slewing into vertical position, & these almost resemble clover — petiole seem to rise much up. —

Melilotus italica (all 3 L. silvery on both sides. —

The 2 lateral leaflets turn on their pedicels through 90°& stand vertical; & so does terminal leaflet, & as its petiole is at ∟' to two lateral petioles, the terminal leaflet stand at a plane approximately at right angles to the two vertical lateral leaflets, — This is very clear case of object of sleep to stand vertically.

(Jun 7th 9˚ 50', the movements are not so general as in M. officinalis, but the middle leaflet turn to one side so that its upper side, now vertical, is pressed against upper, (now vertical & turned inwards) surface of one of the 2 lateral leaflets; & the movement is either to right or left, but always to that side which the upper surface faces.

[36]

Atriplex hortensis Kew seeds May 30 74

(Both sides silvery) (removed by Ether)

(Not a trace if sleep.) or change of position of leaves

Lotus ornithopodoides. (Kew seed)

both surface of all 3 leaflets silvery.

Asleep the petioles rise up a little, (whilst awake, they project a little less than ∟ from stem); the three leaflets approach each other a little & all bend upward or towards the axis of the plant; by this movement of the leaflets & petioles, the leaflet stand more than vertically, & have their under surfaces slightly exposed to zenith. As the leaves on opposite sides of the stem thus behave, the extremity of the shoot is protected & covered by the upraised & overarching leaflets. — This ought to be in

[in margin:] Bloom & movement

July 6th Syringed with water at 43° — & in a few minutes the petioles rose up, so that the three leaflets, especially of the older leaves were pressed against the stem. But the 3 leaflets apparently did not approach each other

over

[36v]

after abt 1/2 an hr the petioles became depressed

Temp of day 61°— Previously all the plant was syringed with 71°— no effect. —

(July 6' 9˚ 30' when asleep the leaflets of the younger leaves approach each other & the lateral leaflets turn upward (or inwards in their vertical position) & thus embrace stem, or young bud at apex

[36vv]

LOTUS

July 10. 74

Syringed Lotus ornithopodoides with small syringe with water at 67°— Air of house 74°— After 10' no effect

On two former occasions I syringed it: once a few sprays w water at 84° (Air 82 1/2) & there was certainly no effect: the other time the whole plant with water at 66 1/2 (air 67) & I thought there was no effect

L. corniculatus both surfaces of leaflet silvery

L. ornithopopoides do & stipules do do

L. [arilata] do do do

L. [coimbriceus] & sericeus. do do do

[37]

Melilotus officinalis (Kew seeds)

May 30'— 74. Bloom

Both side of all 3 leaflets silvery.—

The lateral leaflets twist round, as in M. Italica, but they so as to be approximately vertical, but they do not at all closely approach each other. The terminal leaflet also slew round so as to be vertical, & at the same time twists a little laterally & always to the side so that its upper surface comes into contact with the surface of one of lateral leaflets — therefore its lower surface is alone visible. — (This looks as if upper surface more sensitive to cold; & this agrees with position of terminal leaflets in clover & the inversion of leaves in Cassia, & in Mimosa, & in Arachis. &c.)

The terminal leaflet turns either to right or left, but in both cases the upper surface is in contact; & this must stand in connection whether the terminal leaflet having is becoming vertical, has turned over raised its right or left side, for of course on this will depend when it stands vertically whether upper surface faces to right or left, & whether it faces right or left, the face moves till it come into contact with lateral leaflet. (over)

[37v]

M. officinalis

July 6

Syringed with water at 43°. No effect. Temperature of day 61°— B

[38]

Sida coronopifolia (Kew) both sides wetted easily &, no silver. June 10th — 74

Sleep by raising its leaves till they are vertical, the lower leaves being thus pressed against (a) the axis.— The bending places seem to be upper part of petiole, near to lamina of leaf, where the petiole is a little thickened.—

11th I have looked (11th) at these leaves by daylight & the upper & thickened part of petiole is now straight.

Sida retusa: a little bush— both sides wetted by water easily — The leaves rise a little & three of them become almost vertical, so as to be pressed against the stem; as in sp. above the bending point is close to lamina of leaf; & the petioles in this sp. is short.—

[38v]

July 18' Syringed these plants well with water at 67° no effect whatever

Keep Movement & Bloom

(1

June 30th 74 / Arachis Hypogæa

Upper surface bloom silver not wetted, lower surface quite wetted (good contrast with Cassia showing that protection of lower surface no relation to nocturnal position) Terminal pair rise up— & a [4 words illeg] in sonot

The main petiole become depressed (judging by eye) which is unusual, though common to mimosa — 2 pairs of leaflets, they rise up & come nearly meet & point forwards, so like mimosa & the 4 almost form a terminal bundle.— I suspect that the sub-petiole of 2 terminal leaflets become depressed. (July 1 peduncle clearly risen)

May 18. syringed violently with water at 67° — old leaves not affected — main petiole not depressed, but leaflet of young leaves approached each other & whole leaf turned to one side in the very peculiar manner in which plants sleep, but leaflets did not approach nearly so closely as when asleep.

[39v]

July 21' 9˚ 40' P.m. Asleep the 2 terminal leaflets approach & rise upwards & thus bend toward axis —

The 2 lateral leaflets bend to each other & forwards; so that all 4 leaflet form a close flat bundle — The petiole as stated becomes depressed, but besides this it twists to one side (a unique movement) so that bundle of leaflets has its plane [illeg] directed to zenith — this twisting was plain by following furrow on petiole from axis to the leaflets, Only the younger leaflets leaves go to sleep.— As terminal leaflets are longer than lateral they project beyond the buds protection of 2 lateral leaflets.

This position of Arachis is dreadfully opposed to radiation doctrine—