970845 Comet of 1744 (Cheseaux\'s), Great Comet of 1811, Heads and Tails of Comets, Donatis Comet, 29 September 1858, Comet of 2 July 1861 (engraving) by English School, (19th century); Private Collection; (add.info.: Comet of 1744 (Cheseaux\'s), Great Comet of 1811, Heads and Tails of Comets, Donatis Comet, 29 September 1858, Comet of 2 July 1861. Illustration for Science for All edited by Robert Brown (Cassell, c 1890).); 穢 Look and Learn.