| Description | Thanks him for his letter of 7 March. Although it may be quite true that there is no flue from any opening in the Instrument room to the roof, yet the reduced plans of the building clearly show a shaft going up through the northern wall of that room. Harrison can only conclude that this shaft is the chimney room from the kitchen below, and he should be glad to know whether this could not be utilised for ventilating the room in question. |