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From:
Richard Threlfall
To:
Alfred Russel Wallace
Date:
21 March 1899
Source of text:
Natural History Museum, London: NHM WP1/8/120
Summary:

Light and the blue colour of sea water, work by Tyndall and Aitken, experiments with distilled water, scattering of light by fine particles.

Contributor:
Alfred Russel Wallace Correspondence Project