Paper, 'On the phenomena accompanying stimulation of the gland-cells in the tentacles of Drosera dichotoma' by Walter Gardiner

Description

Gardiner relays observations from a series of experiments, first describing the process of his research: 'Pieces of unstimulated leaves, and of leaves stimulated for periods varying from 5 minutes to 72 hours, were examined fresh, or after treatment with alcohol, picric acid, chromic acid, or osmic acid. The most satisfactory results were obtained from specimens treated for 12 hours with 1 and 2 per cent, chromic acid; such strengths dissolving the tannin precipitate first formed, and fixing the structures most successfully. The leaves were fed principally upon small flies or pieces of frog muscle, since these were found to succeed best. Heat stimuli, electrical stimuli, and stimulus produced by contact or cutting were also employed.'

Annotations in pencil and ink throughout.

Subject: Biology / Botany

Received 5 September 1885. Read 19 November 1885.

A version of this paper was published in volume 39 of the Proceedings of the Royal Society as 'On the phenomena accompanying stimulation of the gland-cells in the tentacles of Drosera dichotoma'.

Reference number

PP/7/7

Earliest possible date

1885

Physical description

Ink and graphite pencil on paper

Page extent

8 pages

Format

Manuscript