[131]

Cyclamen Persicum

1878 June 2d to morning of 5th

Young leaf 1.8 of inch long including petiole, rising arising from old-root stock, observed under skylight & traced on vertical glass.─

End of leaf 7 inches from vertical glass. [sketch]

Movement up & down never on same lines— During first day leaf lowered itself a little as light now came from come aro above. Each day descended from early morning (ie. 6º 40) a.m to about 7º P.m, when the ascending movement commenced till all night till the early morning; but movement, though thus like true sleep, not enough to call any attention without the aid of tracing. It shd be observed that the leaf wd have descended a little further down, had not glass filament rested each day between 5º & 6º P.m. on rim of pot at near the lowest point of descent.—

(A young leaf, 1.8 of inch in length including the petiole, produced by by an old root-stock was observed in usual manner during 3 whole days. See Fig.

During the first day the leaf fell more than on other days afterwards as it apparently adjusted itself position to the light from above. On all 3 days it fell from early morning till about 7º P.m. & then [illeg] In that time hour rose till during the night; with very little zig-zagging so that The movements are therefore is strictly periodical. It shd be noted that the leaf it was late on wd each evening would have fell furth a little lower had not the glass filament daily at that hr rested till 5º or 6º P.m daily on the rim of the

[131v]

[calculations not transcribed]

alm 1/2 inch up & down vertically & circumnutate less from side to side.