Celestial scenery, or, The Wonders of the planetary system displayed : illustrating the perfections of deity and a plurality of worlds (1845)
Dick, Thomas, 1774-1857, Parker, E. S., former owner. DSI, David H. DeVorkin Collection (Smithsonian Institution. Libraries) DSI · Philadelphia : Published by Edward C. Biddle · leaf 126
eheavens by Galileo, in the year 1610 ; but it was not till thebeginning of 1666 that any of the spots which diversify thisplanet were discovered. On the 6th of February that year, inthe morning, Cassini, with a telescope of sixteen feet long,saw two dark spots on the face of Mars, as represented… … These figures are copied from the first volume of the Transac-tions of the Royal Society. Afterward, continuing his obser-vations, he found the spots of these two faces to turn by littleand little from east to west, and to return at last to the samesituation in which he had first seen them. Campani…
Astronomy
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