Catalogue of Le melange des arts, or miscellany of arts, at Davis's Long Room, No. 60, South Great George's-Street. First, that amazing philosophical phenomenon the speaking figure, of a superior kind. Second. a collection of pictures in stain'd glass, and transparencies on silk, the productions of those eminent artists, Mr. Jervais, painter in glass to His Majesty, and Mon. De Lou-Therboug, F.R.A.