Unpublished letter, regarding 'A curious fact' from Peter Smyth to the President of the Royal Society Letter received by the Royal Society as a result of a statement, titled 'A Curious Fact' (see AP/10 for description). Smyth first quotes the problem as he read it in the Dublin Morning Register, then provides his solution involving the atmospheric pressure on the top card acting as a resisting power. Subject: Physics Written by Smyth at 92 Dame Street, Dublin [Ireland] and addressed to the President of the Royal Society [Augustus Frederick, Duke of Sussex] in London. 24 September 1833