Plate 19. 'The Dropping Well' / in the Book, "Phenomena of Nature" [cover title]: 'Thirty plates illustrative of natural phenomena etc. with a short description annexed to each plate' [title page]. - / [illustrations] by Whimper [Josiah Wood Whymper, 1813-1903]; printed by R [Richard] Clay, Bread Street Hill. - London: SPCK etc, 1849. - Engravings, wood, coloured, in bound volume, 35x29x1cm.