[19]

Acacia Queensland

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

Oct 3d. 11°. 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 11° 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 8° & the penultimate by 25°, 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 28°. 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 90°, & this did not agitate leaves & produced no effect.