Lot of four 19th century French engravings and maps reflecting current astronomical knowledge and theories.

1) Les Etoiles Fixes Divisees En Constellations Boreales et Australes. . . Interesting and good-sized star chart by Andriveau-Goujon from the work of Sir Francis Baily. The Milky Way is hand colored in a wash of blue. Dated 1860 (22.8 x 18.7").
2) Systeme Planetaire Suivant Copernic. Our solar system as shown by Copernicus, with the sun in the middle. Flanked on one side by the Earth-centered planetary systems of both Tycho-Brahe and Ptolemy and on the other with diagrams of the sun in relation to the earth. Hand colored, circa 1870 (13.5 x 11").
3) Theorie Des Saisons. This is an uncolored engraving from the same series as the one above, showing the effect of the seasons and the movement of the sun, circa 1870 ( 14.8 x 11").
4) Cosmographie ou Tableau des Systemes du Monde. A sheet with a collection of diagrams on various planetary systems, global projections, lunar views and Halley's Comet, seen on October 29th, 1835. By MMrs. Drioux et Ch. Leroy. Black and white, circa 1872 (16.8 x 11.3").

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Condition: B

Generally good with some toning, light foxing and creasing.