§ MR. JOYCE
I beg to ask the President of the Board of Trade if he will say on what dates Straw Island, South Arran, and Roancarrig Lights were brought into conformity with their description as given in the Admiralty Light List; and whether he can state in degrees to what exactitude the sectors of catoptric and dioptric lights can be cut.
§ MR. GERALD BALFOUR
I am informed by the Commissioners of Irish Lights that it is absolutely impossible to state the exactitude with which catoptric and dioptric lights can be cut, as asked 1124 for, until the actual conditions of each particular light are known. The Commissioners add that no alterations have been made in the cuts of either Straw Island, South Arran, or Roancarrig Lights.