Learning that steamer Globe will soon leave for Chicago, Lincoln books passage. He visits Niagara Falls, with family, who rejoined him probably in late July, and is so impressed by volume of water, roar, mist, and rainbows, that he begins scientific essay on the tremendous natural phenomenon, abandoning it after several pages.Fragment: Niagara Falls, [c. 25-30 September 1848], CW, 2:10-11.