Unpublished drawings, views of cards and tube by John Bates Two drawings showing a side view and a view from above of the arrangement of cards and a tube described in 'A curious fact'. The side view includes drawings of the movement of air within the tube and around the cards. Subject: Physics Written by Bates in Wilson Street, Newark [Nottinghamshire] and addressed to the President of the Royal Society [Prince Augustus Frederick, Duke of Sussex]. Postmarked 3 October 1833. 1 October 1833