Beginning in 1856, Block edited L'Annuaire de l'economie politique et de la statistique. He remained the editor until 1901. Block, along with many French economists of his time, believed that economics was too complex of a subject to be amenable to mathematical techniques.
He retired in 1862 and thenceforth wrote predominantly on the topics of agriculture, finance and public administration, turning to criticism of socialism in the 1890s. A prolific writer, he was published in a number of academic and professional magazines and journals of the time. He continued to devote himself to statistical studies as well.
His principal works are: Dictionnaire de l'administration francaise (1856); Statistique de la France (1860); Dictionnaire general de la politique (1862); L'Europe politique et sociale (1869); Traité theorique et pratique de statistique (1878); Les Progres de l'economie politique depuis Adam Smith (1890); and wrote in German Die Bevolkerung des franzosischen Kaiserreichs (1861); Die Bevalkerung Spaniens and Portugals (1860; and Die Machtstellung der europäischen Staaten (1862).
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