[18]

Vine

Sept 27th. put 2 large drops on upper leaves, not very young, of plant in pot. — left for 24˚, the water being renewed twice —

Temp. about 66° at night, during day from 82° to 75°— Drops not acid— removed & evaporated. The water was Dr Oldling but even this leaves some residue — The residue more from the vines, & in appearance cannot, I think, be accounted for by falling of dust during the time. — It forms a transparent hard crust on the glass.— I have compared under highest power residue from both: that from vine is much thicker & broader, & consists of some gummy or mucilaginous matter, which in drying has cracked a little. — There can be no doubt, I think, that some matter has been extracted.

[19]

Vine

Oct 7th 10˚. 30' put good large drops of pure water on 3 leaves & kept plant hot.— viz from 80° to 85° during midday & from 70 to 74 at night— Water left on for 47h. — The drops were removed when they became dry.

The water was not acid when removed on Oct. 9th 9˚ 30'. —

It was evaporated, as well as that from rather larger quantity of same pure water, in watch-glasses. —(The vine not very good, not very dark green leaves) (Leaves from smoothness all ow drops to fall off— yet got well wetted by rain.)

Compared the 2 watch-glasses; that for the vine-leaves exhibited a little more & but little more sediment.—

(Oct 17 no mark produced on above vine leaves, except perhaps on one (but I am not all sure, for there were other marks) & these very pale brown)

Leaves marked with worsted— 2 pieces on the leaf which had 2 drops on. 2 sides

[20]

Oct 19' 10° 30'

Vine

Young plant from Cattell put on large drops of water on middle of leaf & kept for 48° in case — hot about 76° to 86° & sometimes 90. — Removed water on 21' 10° 30 —

Neither acid nor alkaline: evaporated the water; rather more [illeg] than from pure water; but whether more than can be accounted for by dust, I know not.

Red (no 6) youngish upper leaf

November 1. I have often looked at these leaves & no plain marks— now perhaps parts are rather pale — but nothing to be trusted — Gardeners must be quite mistaken.—

Black (7) Blac old green leaf (N. B needle hole in middle

This case is in one way rather good, as vine-leaves have no protection from rain except a trace from their smoothness—

Say I selected vine leaves from belief of Gardeners