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Hassall writes: 'Chlorophyll, the name given by botanists to the green colouring matter of the leaves of plants, is not, as hitherto obtained, a simple substance, but is composed, in part at least, of constituents whcih are non essential to its green colour, though iron is deemed to be an indispensible ingredient.' Hassall shares experimental observations on chlorophyll.

Annotations in ink throughout.

Subject: Biology / Botany

Received 21 June 1892. Communicated by [Thomas Henry] Huxley.

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Ink on paper
Page extent
69 pages

Creator name

Arthur Hill Hassall

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Arthur Hill Hassall, Unpublished paper, 'On the colour of leaves of plants and their autumnal changes' by Arthur Hill Hassall, 1892, AP/69/1, The Royal Society Archives, London,, accessed on 26 May 2024

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    Dates: 1768-1989

    The 'Archived Papers' collection is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.

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