WOLLASTON (William Hyde) — On Double Images Caused by Atmospherical Refraction.

Printed by W. Bulmer and Co. 1800. 4to, [ii], 16pp., one folding engraved plate, pinhole worming to blank margin (not effecting text), recent half calf. The first separately printed edition of a paper which was originally read before the Royal Society on 6th March 1800, and published in the ‘Philosophical Transactions of the Royal Society of London’. “William Hyde Wollaston’s paper on mirage theory: Wollaston re-invents Hook’s (1665) two-liquid demonstration here. He distinguishes between “two opposite states of the atmosphere” that produce double or triple images; he also notes what we would call looming, and explicitly mentions mirages on roads”—Young, Annotated Green-Flash and Mirage Bibliography. ESTC locates copies at Cambridge University & John Rylands Library.