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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 90°-89° removed most of bloom from upper surface & all from lower.

Syringed for 2' with water at 85° & 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 9° 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. 4° P.m I see the older leaflets are have brown ring, I do not think deposit, & some specks on the younger leaflets.)

(Aug 6th 8° 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 4° 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. 8° 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

11° 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 69°) Aug 13' 77°.

(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