"0. Bruxelles, M. Hayez, imprimeur de l'Académie Royale, 1874, in-8°. Article of 5 pp , with no illustrations, published in the '' Bulletin de l' Académie Royale des Sciences , des Lettres et des Beaux-Arts de Belgique, Issue N° 7 (43e année, 2e série, tome 37), Bulletin de la Séance du 4 juillet 1874 ''. Here on offer is the complete issue, as published, in original imprint. Pagination of the issue is 1-284 (with other articles). Unopened copy, lacks front wrapper, bookblok broken, needs a binding, edges a bit dustsoiled and frayed. ( ;belgian;history;science;cosmography;planets;mars;bulletin;academy; ) ."
2. Bruxelles, M. Hayez, imprimeur de l'Académie Royale, 1874, in-8°. 3 articles of together 5 pp , with no illustrations, published in the '' Bulletin de l' Académie Royale des Sciences , des Lettres et des Beaux-Arts de Belgique, Issue N° 8 (43e année, 2e série, tome 38), Bulletin de la Séance du 1 aout 1874 ''. Here on offer is the complete issue, as published, in original imprint. Pagination of the issue is 290-372 (with other articles). Unopened copy, sewn, original printed wrapper. ( a bit dustsoiled ). (on Coggia's comet observed in 1874).