[1]

March 31— 1863. All the oxalis go to sleep in Hot-house — leaves droop & each leaflet slightly fold in; except O. Braziliensis, & very young leaves of this do. — This species is not sensitive.

The yellow oxalis with upper foliage, when under side of leaflet touched & slightly lifted up certainly very slightly moves down.—

The O. Bowii from Kew (with purple ring like clover) & different from our O. Bowii is most sensitive, when leaf taken between thumb & finger & pinches; & especially when under side of basal articulation is touched pricked & especially after leaf has been a little lifted up.

Movement plain. — As far as I can make out all the stimulant resolve themselves to effect of lifting up leaf— depressing it has not same effect — drop of chloroform no effect — young leaf of O. Braziliensis did act a little & the copper-leaf sp. from same stimulus. —

[2]

I find beyond a doubt that this O. Bowii if shaken, within hot-house, depresses all its leaves slightly. — O. crenata seem to have little power of movement;— but does move.—

April 1' I have tried again shaking in Hothouse the above O. Bowii & all leaves went to sleep: on my return from my walk at 4˚. 30' leaves all upright again. —

O. acetosella is slightly sensitive when leaf lifted up: I now remember the wind formerly, made a plant go to sleep.—

Ap. 9th tried again shaking O. Bowii went well to sleep except a few old leaves — Flowers are now in full bloom —