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Chromatics of the Sky
![Chromatics of the Sky](https://coimages.sciencemuseumgroup.org.uk/671/486/small_thumbnail_smg00007792.jpg)
![Chromatics of the Sky](https://coimages.sciencemuseumgroup.org.uk/203/782/small_thumbnail_1889_0065_0018.jpg)
drawing. chalk and crayon, col; no 182. 1887, Dec 5, 8.30pm. Pale purple at horizon. Pale crimson orb with streaks of crimson and amber. Pale lavender at zenith. Weather supervening. Frost on this and several successive days. / John Sanford Dyason