(1

Drosera

June 7th selected a young leaf with long petiole, but with tentacles still infolded & fixed glass filament to back [sketch] &; traced on vertical glass under skylight: (See tracing) from 9° 15 a.m. 7th to morning of 9th.— Chief movement up & down, but ascending & descending lines do not coincide. Makes alm 2 ellipses in 24° — There can be no shadow of doubt about circumnutation. — at close of observations, tent leaf partially unfolded, most of tentacles projecting at right angles to blade. (Used)

(2

Drosera rotundifolia

June 9th observed old leaf still secreting well (see tracing A) under skylight [sketch] It fell in zig-zag line all day & night, but not much. Next morning Jun 10th at 7°. a.m— slided pot a couple of inches, to right & gave it large drop of sol. of C. of Ammonia (by 9° glands blackened & many tentacles inflected) 2 gr to 1 oz. The Weight Caused leaf— Caused leaf to drop a little (see (Tracing B) Leaf then rose rather rapidly to 3° P.m. when it oscillated round & round till about noon on 11th when it began to fall & continued to fall to 8° 30' a.m on 12th— By this time tentacles had recovered colour & were partly unfolded.

We may conclude that C. of A. causes leaf to rise, perhaps infolding of lamina— & that in sinking sinking [illeg] again these there is circumnutation, as descending line very is zig-zag.— We also learn that quite old leaf circumnutates a little whilst absorbing C. of Ammonia. — Also that old leaf sinks slowly when not stimulated.

Jun 13th & 14' tried a leaf with infusion of meat, caused great inflection & consequently rising of filament, but next day leaf killed— no result

[in margin:] (Tip of Leaf 9 1/2 inches from vertical glass.)