Alexander von HUMBOLDT. L.A.S., [Paris] Monday, to a friend; 2pages in-8. "Here are my leaves, my excellent friend. Mr Gay Lussac is leaving here, and he and all my friends are in excellent spirits." He again undertook Mr Ramond, "quite contrary to magnetism, which he explained to us a little boringly, but very attached to Mr Deleuze the pure, amiable, eloquent writer, the learned botanist... Nothing has been neglected, yet I wouldn't want to be at all sure of success, for in the evening at the château chez la duchesse d'Escars, I saw the Duc de Raguse and Mr de Villefosse praising the promises of the very people for whom I count most in the commission; "Quant on connait l'homme, on reste chez soir", said our good old Ducis: je ne resterois pas chez moi, mais j'irois chez vous, tant est profonde l'estime et la reconnaissance que je vous porte"...