Mademoiselle de Camargo, in spite of her charming vivacity when dancing, was of a melancholy mood off the stage. She was not remarkably pretty, but her face was highly expressive, her figure exquisite, her hands and feet of the most delicate proportions, and she possessed considerable wit. Dupré, the ex-violinist, who had leaped at a bound from the orchestra to the stage, was in the habit of dancing with Camargo, and also with Mademoiselle Sallé, another celebrity of this epoch, who afterwards visited London, where she produced the first complete _ballet d'action_ ever represented, and at the same time introduced an important reform in theatrical costume. The art of stage decoration had made considerable progress, even before the Opera was founded, but it was not until long after Mademoiselle Sallé had given the example in London that any reasonable principles were observed in the selection and design of theatrical dresses. In 1730, warriors of all kinds, Greek, Roman, and Assyrian, used to appear on the French stage in tunics belaced and beribboned, in cuirasses, and in powdered wigs bearing tails a yard long, surmounted by helmets with plumes of prodigious height. The tails, of which there were four, two in front and two behind, were neatly plaited and richly pomatumed, and when the warrior became animated, and waved his arm or shook his head, a cloud of hair powder escaped from his wig. It appeared to Mademoiselle Sallé, who, besides being an admirable dancer, was a woman of taste in all matters of art, that this sort of thing was absurd; but the reforms she suggested were looked upon as ridiculous innovations, and nearly half a century elapsed before they were adopted in France. This ingenious _ballerina_ enjoyed the friendship and regard of many of the most distinguished writers of her time. Voltaire celebrated her in verse, and when she went to London she took with her a letter of introduction from Fontenelle to Montesquieu, who was then ambassador at the English Court. Another danseuse, Mademoiselle Subligny came to England with letters of introduction from Thiriot and the Abbé Dubois to Locke. The illustrious metaphysician had no great appreciation of Mademoiselle de Subligny's talent, but he was civil and attentive to her out of regard to his friends, who were also hers, and, in the words of Fontenelle, constituted himself her "_homme d'affaires_." [Sidenote: PHILOSOPHERS AND ACTRESSES.]