Another busy week of pleasure and amusement has glided by since you have heard from us, and two evenings of it have been spent at two delightful soirées. The first at Madame de N----'s, the second at the gallant old General Lafayette's, in the rue d'Anjou; where he has a suite of small and neat apartments illuminated for the reception of his expected guests on every Tuesday evening. We made our debut there about 9 o'clock and found them crowded. Among the throng were many celebrated and interesting personages, for the worthy and enlightened of all nations seem ever ready to do homage to the virtuous patriarch of Lagrange. At his soirées the greatest ease prevails--the refreshments are simple and plentiful, and in compliment to the Americans and English, tea is always served, a custom not practised among the French. We again saw Sir Charles and Lady Morgan and Mrs. Opie, with whom by the bye we have exchanged visits. Then there was the orator Benjamin Constant, a pale, thin man, with light blue eyes and snowy hair, looking as if he were far on his passage to the next world. He was environed by a crowd of gentlemen, to whom he was speaking very earnestly with a great deal of gesture. Not far from him we observed other stars of the Chamber of Deputies, and these were Messieurs Casimir Perrier, Laffitte and Ternaux, whose countenances bespeak their noble minds. Monsieur Ternaux has introduced here and carries on the manufacture of cashmere shawls, and they not only equal those of India in tints and texture, but surpass them in the beauty and richness of the borders. To him also is attributed the discovery of the art of stamping patterns in relief on cloth table covers, &c. In the next room, we saw Mr. Cooper, the American novelist, and his lady--the two Miss P----'s, cousins of Lord Byron and Mr. and Mrs. ----. She is the daughter of Gen. Bertrand, and a beautiful creature she is. The lovely countess d'A---- was sitting near her. She is the sister of Madame George Lafayette, and is an intelligent and fascinating woman. She called here yesterday with Madame Lasteyrie and her daughters.