Annals of Philosophy, 16-226:
That, Nov. 2, 1819—week before the black rain and earthquake of Canada—there fell, at Blankenberge, Holland, a red rain. As to sand, two chemists of Bruges concentrated 144 ounces of the rain to 4 ounces—"no precipitate fell." But the color was so marked that had there been sand, it would have been deposited, if the substance had been diluted instead of concentrated. Experiments were made, and various reagents did cast precipitates, but other than sand. The chemists concluded that the rain-water contained muriate of cobalt—which is not very enlightening: that could be said of many substances carried in vessels upon the Atlantic Ocean. Whatever it may have been, in the Annales de Chimie, 2-12-432, its color is said to have been red-violet. For various chemic reactions, see Quar. Jour. Roy. Inst., 9-202, and Edin. Phil. Jour., 2-381.
Something that fell with dust said to have been meteoric, March 9, 10, 11, 1872: described in the Chemical News, 25-300, as a "peculiar substance," consisted of red iron ocher, carbonate of lime, and organic matter.
Orange-red hail, March 14, 1873, in Tuscany. (Notes and Queries 9-5-16.)
Rain of lavender-colored substance, at Oudon, France, Dec. 19, 1903. (Bull. Soc. Met. de France, 1904-124.)
La Nature, 1885-2-351:
That, according to Prof. Schwedoff, there fell, in Russia, June 14, 1880, red hailstones, also blue hailstones, also gray hailstones.
Nature, 34-123:
A correspondent writes that he had been told by a resident of a small town in Venezuela, that there, April 17, 1886, had fallen hailstones, some red, some blue, some whitish: informant said to have been one unlikely ever to have heard of the Russian phenomenon; described as an "honest, plain countryman."
Nature, July 5, 1877, quotes a Roman correspondent to the London Times who sent a translation from an Italian newspaper: that a red rain had fallen in Italy, June 23, 1877, containing "microscopically small particles of sand."