[58]

May 31' to June 1' to morning of 3d 1878

Oxalis acetosella

Circumnutation of pod

A cleistogamic fl. had produced pod in pot & the pod had bowed downwards so as to touch the peduncle the hook thus formed being very short— A glass filament projecting .9 of inch was fixed to dependent pod so that bead stood up almost upright above pod, projecting .9 of inch, mark fixed behind at such a distance that Tracing was magnified only 2.8 times. Kept dark traced on vertical glass.

During May 31' & morning morning of June 1' Tracing too much magnified. The Tracing given was commenced at 11° a.m on Jun 1' & finished at 9° am on June 3d. At the close of the observations pod was getting nearly ripe & was raised so as to project at right angle to plumule, This movement caused the Tracing to ascend on the glass. the chief line of movement circumnutation was at right angles to the plane of the hooked hook of peduncle but there was movement in the plane of the hook, for otherwise the lines from right to left wd have coincided. Circumnutation very considerable & moderately rapid. These observation important for they show that in case of O. Carnosa, that pod wd. have gone on circumnutating, whilst the peduncle was bending upwards, so as to stand vertical, which was not observed owing to absence from home.—)

(Jun 5' noon the peduncle of Pod now quite straight: I see there is joint in middle, so no great difference from peduncle of O. carnosa—