A

April 14th 1881.— Mimosa pudica

Two very young plants with moderately old leaves — leaves & leaflets fastened down with shell lac to bits of cards— Plants kept in Study under Bell glass before N.E window—

12 Leaflets with drops of water between 96° & 100° F put on & thrice slightly washed with fine camel-hair brush— marked with black dots on cork — Leaflets on each side of them washed in exactly same manner & then left to dry—

11°. 30' a.m. On the 12 leaflets drops of distilled water (ice water) put on & left under bell-glass to be removed whenever dry.

April 24th 8° a.m. — so many leaves mouldy & injured nothing can be told, but I have watched whole time & cd see no trace of marks from drops at any time.—

Ap 27— Both leaves died in Hot house.

B

April 29 1881. Mimosa pudica.

2 young plants — moderately old leaves.— 16 leaflets washed camel brush, & water at 96— pinned open— on 8 of these leaflets. viz outer one on each pinna drops of water put. (marked with black dots.) — Plants placed in Hot-case at 10°. 45' a.m. 29th with the drops of distilled water

May 1st. 4° P.m.— 3 leaflets on one plant A & 1 leaflet on other plant B yellowish & rotting — yet opposite leaflets were washed &/ pinned down in same manner & appear sound. — Cork dry —(surely it cannot be the pinning down minute dots of black grease— — Try this.)— all four leaflets on A are [illeg] — opposite pinned leaflets are fresh as ever.

May 3d. The 4th leaflet on the plant /A/ dead & a second leaflet on (B.) yellowish. (May 4th this 2d leaflet certainly yellowish.

(A 5th All these observations absolutely worthless for I now know that small drops of the black grease are poisonous;) except as showing that leaflets many pinned far above dots to evening of May 5th on the cork without any injury—

(C

May 2 d. 1881.— Mimosa pudica

11° 30' a. m— a new plant— 8 leaflets cleaned with camel-brush.— 4 with drops of water — outside leaflets —(I marked 4 of the leaflets on one pinna with black grease-dots – 2 of which will have drops & 2 will not have them, so as to see whether these can injure leaflets— All 8 leaflets pinned down. — In Hot-case, Hot house.

(May 3d 7° 15'. a.m I put biggish dots of black Grease on the 2 washed leaflets, which do not bear drops of water, as a further test whether the grease can be injurious.)

May 4th in evening yellowish & on morning of 5th quite yellow so is deadly poison.—)

Fortunately there are 2 leaflets on which no black dots were put

May 11th. These 2 leaflets now certainly look yellowish — still a little plainer on the 12th—

May 15. There can be no shadow of doubt that these 2 leaflets present a quite different appearance, by their yellow tints, from the opposite, pinned & washed leaflets or any others on the whole leaf; but there drops of water remained almost continually on on for 13 days.— See paper for Temp Case shaded by blind. (over)

[Cv]

May 17, but now several leaflets near to the 2 which had drops of water all became equally yellow, is the whole case somewhat doubtful.

D

May 5th 1881 last Plant Mimosa pudica under Bell-Glass??

8 leaflets pinned open on cork in hot case; nothing else done, except all washed with camel brush & water at 98°.— Drops put 5° 15' P.m. on 2 outer leaflets on the 2 pinnæ — so 4 leaflets with drops of distilled water

May 8th morn. one leaflet with drops yellowish— 9th 7° a.m quite dead & yellow

— 12th 8° a.m.— 3 other leaflets yellowish, but the opposite leaflets which were pinned also look a little injured

May 23d Of the 4 leaflets with drops since May 5th I can see except the one which died, not the least difference compared with those which had been washed & pinned open, (one of which died) but with no drops of water placed on them without sunshine, though kept very hot— apparently water causes no injury

Under Bell- Glass

See under Desmodium for temperatures