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Cassia calliantha (Guiana) 1877 (Sleep?)

Aug 2d. leaves beautifully silvery both sides— a few fine hairs on upper surface & numerous little points, which seem to secrete wax, for removed by ether & surface then wetted & colour brighter green.

Waving for 1' in water 90º-89º removed most of bloom from upper surface & all from lower.

Syringed for 2' with water at 85º & shook for 1' (some few small drops remained on leaflets) & soon the leaflets became a little oblique; same movement as if going to sleep, & this wd aid in shooting off water.

At 9º 20' fixed 3 young leaflets on left sides sponged with water at 90 also 3 older leaflets & put on sphere on uncleaned leaflets on opposite sides.

(Aug 5. 4º P.m I see the older leaflets are have brown ring, I do not think deposit, & some specks on the younger leaflets.)

(Aug 6th 8º 30' older leaf all 3 cleaned leaflets injured & marked by brown circles, & 3 are uncleaned on which spheres were left a trace of injury

Younger leaf 2 of the leaflets with brown spots. (over)

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Aug 9th 4º P.m. 2 of leaflets on older leaf (not cleaned) are now yellow & dying & a third on cleaned side beginning to look yellow.

Aug 10th. 8º Freed the leaf leaves: older leaf sponged leaflets on left side with brown circles— The untouched & unsponged leaflets on right side with smaller brown circles (F will describe) the mid-rib not affected. The spheres at first rolled about, but soon they acted on surface & adhered very well, but did not cover so large a space.

Younger leaf: of the 3 sponged leaflets, one with brown specks; the 3 unsponged leaflets not affected. (see Franks descrip

Aug 11th at night leaf normally asleep.

[in margin:] Black wool to both leaves

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Aug 3'. 1877 Cassia Floribunda

11º 45'. F filled up plant, fastening leaf on base cork, so that water drops, about the size of those of a thunder shower fell on one leaflet from a height of 27 1/2 inches & splashed on the adjoining leaflets

(Augt 6th water 69º) Aug 13' 77º.

(Most of the days rather cooler than hitherto.)

Aug 13 The sole effect, perhaps whole leaflet's look paler green.

Aug 15 I can see no sort of effect. (Does injury follow from alternately dry & wet?) Marked the leaf with yellow wool, & an adjoining leaf which was constantly sprinkled with purple wool.

— 16' no sign of injury — leaf went to sleep last night.

Oct 7th the leaflet with yellow wool now bright yellow, while its fellow & no other on leaf yellow— This may be accidental, but I hardly think so.—

& terminal leaflet (purple wool) similarly yellowed