[14]

August 8 1877. Acacia Farnesiana.

Syringed for 2' 2 leaves with water at 90°, & all the leaflets become highly inclined; I think thus that would thus better throw off water than in their natural position.—

[15]

Aug 9th 77 Acacia Farnesiana

minute Leaflet silvery— removed by ether— waving for 1' did not remove f in water at 90°, but for additional 1' did remove silver

A

Aug 29th 1877. Acacia Farnesiana

syringed leaf with water at 64° F. for 2', leaflets soon moved & in a few minutes all rose up & pointed towards apex of leaf, but did not completely close.

Syringed another leaf with water at 90°, that closing the same in degree, but apparently acted more quickly. I shook leaves slight & then examined them & they were perfectly dry.

When leaves syringed with ether spray minute spheres adhere to edge of leaves & especially to under side.

When leaflets nearly closed, large drops of water will not adhere or remain in the furrow formed by nearly closed leaflets—

The pinnæ also become depressed.— Shaking leaves roughly for 2' caused the leaflets to close almost as much as syringing. I think in this closed position water wd be much less apt to adhere than to horizontal leaflets & wd not beat them so much.—

(only kept wet on intervas for water soaks away)

(B

Acacia Farnesiana

I pinned down 2 leaflets but fd. by by no possibility could I get a drop of water to adhere to leaflets, so sponged them with rather warm water, & then when dry I got water to adhere.—

[sketch]

To make sure that leaflets were not injured by tepid warm sponge, I thus sponged leaf pinna A & will put on no drops of water.

Sept 17th (it is doubtful when pinned down, I believe on 1st 2d or 3d) but that experiment very poorly tried for water wd not rest on the narrow leaflets— no apparent injury— marked with red wool — The leaflets seem a shade paler. The leaf which was sponged with very warm water is not injured.—

[18]

Acacia Farnesiana. 1877

Sept. 18th 9° A. m put good not very young leaf on cork under a single dripping machine—

Height of drip 8 inches.— — The dripping has been been rather intermittent, owing to pipe being out of order.

Sept. 24 I can see no trace of effect — removed leaf purple wool.—

Sept 25th the leaflets now look much injured brown specks & discolored & seem to have lost power of movement

Sept. 27 3 of the leaflets dropped off; 3 other with tips & spots browned, much injured.— 2 or 3 other slightly injured: Contrast great with 2 terminal pairs, which were not dripped on & look quite fresh.

(Oct 2d 6 leaflets have now dropped off.

N. B. The leaves on which drops rested are certainly very little or not at all injured.)