2026-10-06 Nature (nature.com archive), Parallax

URL: https://www.nature.com/articles/001581a0. "The Rotundity of the Earth", Nature vol.1 p.581, 7 Apr 1870. DOI 10.1038/001581a0. Result: partial. Only the first paragraph is free; the rest is paywalled (purchase not attempted). Free text [web: URL above]: it recounts The Field's account of the Hampden-Wallace test: three signals 13 ft 4 in above the water, 3 miles apart, with Wallace predicting the central signal about 5 ft above the line. The full quoted Field passage survives in the Cambrian reprint (see welsh-newspapers). Lead: the original Field report of March and April 1870 (J. H. Walsh, umpire). Not reached.