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Amphicarpaea Monoica — Young seedling only 2 leaves, each with 3 leaflets sleep in exactly same manner as Erythrina, that is bend all 3 leaflets vertically down. The petiole of leaf bends greatly downwards 45°. (N.B It was very clear that leaflets turned their edge to sun when shining brightly.) (Light) (Used)

Sept 1'— During day petioles formed with vertical axis or stem an angle of 115° [-] 90 [=] 25 & at 8° 30; P.m. of same day only an angle of 58° with axis, so had fallen through an angle of 57°. (Climbing Plant) [sketch] 90 [-] 58 [=] 32

Sept 5th syringed 2 leaves with water 88°-89° — striking the leaflets chiefly from below & laterally, & the leaflets became greatly depressed, almost in position of sleep. — I suspect petioles fall. —

Sept 6th a leaf had had petiole 54° with stem above— shook it for 3' with a little twig the terminal leaflets which had been nearly horizontal fell into highly inclined position; descended & petiole now was now 79° with stem, so had fallen 25°. The lateral leaflet did not fall much, but they were directed vertically to the sum.

(Keep for Bloom & movements when shaken)