The statements of "Chiro-Medicus" may seem somewhat overcharged; yet, after allowance has been made for that exaggerated way of putting the case which seems habitual to "the faculty" when it takes up with a new theory, a sufficient residuum of fact remains to justify many of the doctor's remarks. That a headache too often follows hard upon a dramatic entertainment must be tolerably plain to anyone who has ever sat in a theatre. Surely a better state of things must have existed a century ago, when the grandsires and great-grandsires of us Londoners were in the habit of frequenting the theatres night after night, almost as punctually as they ate their dinner or sipped their claret or their punch. To look in at Drury Lane or Covent Garden, if only to witness an act or two of the tragedy or comedy of the evening, was a sort of duty with the town gentlemen, wits, and Templars, a hundred years back, when George III. was king. But gas had not then superseded wax, and tallow, and oil. Beyond increasing the _quantity_ of light, stage management has done little since Garrick's introduction of foot-lights, or "floats," as they are technically termed, in the way of satisfactorily adjusting the illumination of the stage. The light still comes from the wrong place: from below instead of, naturally, from above. In 1863, Mr. Fechter, at the Lyceum, sank the _floats_ below the surface of the stage, so that they should not intercept the view of the spectator; and his example has been followed by other managers; and of late years, owing to accidents having occurred to the dresses of the dancers when they approached too near to the foot-lights, these have been carefully fenced and guarded with wire screens and metal bars. Moreover, the dresses of the performers have been much shortened. But the obvious improvement required still remains to be effected.