On his return to Paris, he was treated with dignity, but distantly by
Napoleon. At the
Restoration he entered the
House of Peers, but
Louis XVIII refused to reinstate him as master of the wardrobe, although his father had paid 400,000
francs for the honour. Successive governments, revolutionary and otherwise, recognized the value of his institutions at Liancourt, and he was for twenty-three years government inspector of his school,
École nationale supérieure d'arts et métiers, which had been removed to
Châlons-en-Champagne. The 19 member jury for the 5th
Exposition des produits de l'industrie française was chosen in May 1819, with the Duc de la Rochefoucauld as president and
Jean-Antoine Chaptal as vice-president and rapporteur. Chaptal had arranged the 2nd and 3rd expositions, and again played a leading role. The 5th exposition opened on 25 August 1819 in the great halls of the Louvre palace. Rochefoucauld was one of the first promoters of
vaccination in France; he established a dispensary in Paris, and he was an active member of the central boards of administration for hospitals, prisons and agriculture. His opposition to the government in the House of Peers led to his removal in 1823 from the honorary positions he held, while the vaccination committee, of which he was president, was suppressed. The academies of science and of medicine admitted him to their membership by way of protest. Official hostility pursued him even after his death, for the old pupils of his school were charged by the military at his funeral. ==Works==