(1

Caladium. esculentum (a common Greenhouse Plant)

(sleeps) May be said to sleep

Caladium esculentum vel Colocasia antiquorum Schott— this is first & Proper name

A young leaf only 4 inches in length from apex to forked base, with petiole only 3 1/4 high was observed under skylight glass-filament attached to forked brim & traced on [sketch] vertical glass. Apex of forked base 11 inches from glass. When tracing rises the apex of leaf falls.— (Temp on 22d 19-21ºC. on 23d 21ºC.) See tracing from morning of 22d to morning of 24th this shows that apex of leaf on all 3 morning mornings rose on one day till 4º P.m, on second day till 4º P.m.; & then on both days fell till 7º or 9º P.m, beginning afterward to rise & so continued all night till 5 quarter before 7º a.m when reobserved reobserved, & as we have seen so continued till 10º a.m or 4º P.m, when a great fall commenced. I had better begin by saying that rises all night, beginning at 7º or 9º P.m, & continues next morning till 10º a.m or 4º P.m; when a rapid fall commences.

(24th Plant was brought into my study & placed in window— at 9º a.m apex was 6º below horizon: at 12º 11º 45' only 1º below horizon; & this rise may have been probably was due to increased light: [sketch]

At 4º 20; 20º below horizon; at 5º P.m. 26º

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Caladium

; at 6º P.m. 43º beneath Horizon: at 7º 20' 69º below horizon. — at 8º 30 6' 8º below Horizon so had begun to rise at 10º 15' P.m 65º below Horizon.— The angles were taken by semicircular protractor & plumbit— the line being from apex to nearer p basal point of leaf.— Considering that it was only 21º from hanging perpendicularly down, may be called sleep; & some of the other leaves were quite perpendicular down.— Next morning cloudy & the observed leaf at 11º instead of being only a few degrees beneath Horizon, now stood 27º beneath horizon; & so had risen since last night only 42º.—