Unpublished paper, 'On the integrability of certain partial differential equations proposed by Mr [George Biddell] Airy' by Robert Moon Moon presents a set of equations proposed by Airy, and proposes to show that neither equation is [perceptible] of an integral solution involving one or more arbitrary functions. Marked on front as 'Archives 1867'. Subject: Mathematics Received 30 April 1867. Read 16 May 1867. Communicated by [James Joseph] Sylvester. Written by Moon at 6 New Square, Lincolnshire [England]. Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 15 of the Proceedings of the Royal Society as 'On the integrability of certain partial differential equations proposed by Mr. Airy'. 15 April 1867