Mr. Doughty, the ingenious manufacturer of pens with ruby and rhodium nibs, having discovered the injury that those pens received from being incautiously struck against the glass of common inkstands, contrived to manufacture an interior bottle of Indian rubber, of nearly the form of the external ornamental case, as shown in the annexed section of one of his elegant inkstands. The stopper is of a conical form, and is so fixed in the screwed head or cap as to have a little lateral play therein, which admits of its adapting itself exactly to the conical neck of the inkstand, and when screwed down, prevents the possibility of leaking; and that the ink may not corrode the metal stopper, the latter is coated with gold or platinum.