[19]

Acacia Queensland

with long bipinnate leaves — stem very thin like a creeper.

Oct 3d. 11º. 30.— Cleaned Sponged with tepid water on right-side (Viewed & counted from base) from the 6th to 12th leaflets included & put on drops on 6 leaflets pinned down.—

Also drops on some of opposite leaves & drops adhered fairly well.—(If any result experimentise with warm water on bloom)

Oct 15. removed drops no injury— marked with red wool, the 6 leaflets beyond the wool.

Oct 19th 11º a.m. Pinned 3 leaflets so that tips converge on cork & put under drip, falling from height of 22 inches

Oct 21th I think leaflets infiltrated????

— 24' one leaflet which was a little oblique dropped off on being touched

— 25 Stopped the drip: the 2 leaflets on which drop chiefly fell with blackened spaces, but I doubt infiltrated marked with red wool.

Oct 29th on my return home I find 5 leaflets dropped off & some adjoining ones on distinct leaf which were incessantly splashed, merely injured. (a)

[19 verso]

Nov. 1. I now find 9 leaflets dropped off—

Also on adjoining leaf on one side alone, which was continually dripped, but not hit by the larger drops, 7 leaflets have dropped off.— This leaf merely rested on the smooth & thin sheet of cork. —

[20]

Nov 2d 77

Queensland Acacia

Shook a leaf for 2' The whole leaf did not alter its angle with respect to stem, but the 2 terminal pinnæ approached (a) Back each other by 8º & the penultimate by 25º, at the same time all the pinnæ become depressed, so that the angle which the pinnæ on opposite sides of the pinna formed with each other in a transverse line was reduced by 28º. The leaflets which were opposite each other moved towards apex of pinna, at the same time twisting on their axes & becoming oblique. As a consequence of this position of the leaflets, combined with the lowered pinnæ the edges of the laminæ of the leaflets pointed directly upwards, & then were in an excellent position as I tried for drops of rain not to lodge on the laminæ & not to hit hit them violently.— I neglected to measure early enough in season the exact position of the pinnæ during sleep, but they converged more & become more depressed than from shaking. The leaflets on opposite sides of pinna, met & came in opposition, so that their upper surfaces are protected, & were are also directed to apex of pinna. & stood stand vertically.

(I find some of the leaves are 10 inches long & bear 4 or 5 pair of long pinnæ.— I pinched repeatedly joint where leaf joins stem, but could not perceive that leaf was raised or depressed.

[20v]

(a) Nov 7 syringed for 2' with ether-spray & water at about 90º, & this did not agitate leaves & produced no effect.