Paper, 'Contributions to the chemistry of chlorophyll. No. II' by [Henry] Edward Schunck

Description

Schunck writes: 'Considering the intimate though as yet little understood connexion between chlorophyll and the carbon dioxide of the atmosphere, it seemed to me that it might be of interest to ascertain whether compounds of phyllocyanin, similar to those previously described, could be obtained, in which the organic or other acid should be replaced by carbonic acid. On passing a current of carbon dioxide through a solution of phyllocyanin in absolute alcohol holding a quantity of freshly precipitated hydrated ferrous oxide in suspension, no combination took place, the phyllocyanin remaining unchanged, though the current of gas was passed through the liquid for a considerable time.'

Annotations in pencil and ink. Includes one diagram of the absorption spectra of phyllocyanin and its principle compounds and derivatives.

Subject: Chemistry / Biology

Received 25 November 1886. Read 16 December 1886.

A version of this paper was published in volume 42 of the Proceedings of the Royal Society as 'Contributions to the chemistry of chlorophyll. No. II'.

Reference number

PP/10/23

Earliest possible date

1886

Physical description

Ink and graphite pencil on paper

Page extent

15 pages

Format

Manuscript
Diagram