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Chromatics of the Sky
![Chromatics of the Sky](https://coimages.sciencemuseumgroup.org.uk/670/573/small_thumbnail_smg00005826.jpg)
![Chromatics of the Sky](https://coimages.sciencemuseumgroup.org.uk/203/770/small_thumbnail_1889_0065_0006.jpg)
drawing. chalk and crayon, col; no 49. 1883, Nov. 17, 3.00pm Purple cumuli near horizon, with a streak of sea-green colour above. Lemon and grey intermingled near the zenith. Weather supervening. A squall at 3pm. / John Sanford Dyason