5. In case of the stoppage of either Line of Rail from any cause, or there being any danger apprehended in the passage of an Engine or Train, whether in Foggy Weather or otherwise, the Station Police, Signal, Switch, or Tunnel man, is to place one of these Signals on the Line or Lines of Rail so obstructed, every 200 yards from the point of danger, until the Line or Lines of Rail are so protected for half a mile. 6. In Foggy Weather these Signals are to be similarly used whenever an Engine or Train is following, or likely to follow, too closely upon another Engine or Train, or in cases of emergency or great danger. 7. Whenever an Engine passes over one of these Signals, the Engine-Driver is immediately to stop the Train, and the Guards are to protect their Train by sending back and placing a Signal on the Line every 200 yards, to the distance of 600 yards; the Train may then proceed slowly to the place of obstruction. 8. After the obstruction of the Line is removed, the Guards, Police, or Engine-Driver, must remove all the Signals from the Rails before proceeding. 9. Each Guard, Policeman, and Pointsman, not at a Station, and all Enginemen, Gatemen, Foremen of Works, Gangers of Plate-Layers, and Tunnelmen, will be provided with packets of Signals, which they are always to have ready for use whilst on duty; and every Officer in charge of a Station will be provided with these Signals, which are to be kept in an unlocked drawer or shelf in the counter, in order that they may at all times be easy of access to all on duty at the Station: and every person connected with the Station shall be made acquainted with the place where they are deposited. 10. All the persons above named will be held responsible for their having the proper supply of Fog Signals; when one or more are expended, it is their duty immediately to apply to the Superintendent of their section for a further supply to keep up the stock as above directed. SECTION IV. REGULATIONS FOR ENGINEMEN.