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Various
A chart from 1746 by Jacques-Fabien Gautier illustrating his theory that primary colours are black and white, with red yellow and blue being secondary.
“Ring within Ring”
Thomas Wright, stars moving “in the Manner of Saturns Rings, nay, perhaps Ring within Ring, to a third or fourth order”.
Obliquity of the poles
Thomas Wright, “Shewing a decrease in the Obliquity of the poles”
A New Elucidation of Colours
Two plates from james sowerby’s A New Elucidation of Colours, original, prismatic and material (1809).