Copy letter from Walter White, Assistant Secretary of the Royal Society; to the First Commissioner Office of Works Requests advice in terms of fire proofing for the building [Burlington House]. Explains that shortly after the Royal Society moved into the building (1873), smoke and heat would be reported on the second floor whenever there a fire was lit on the first. Mr Ruddle the Clerk resolved the issue by placing a layer of concrete underneath the second floor. Now the issue has returned and Mr. Street has found the concrete broken into small fragments. 13 November 1879