Letter from [John James] Waterston, 22 London Street [Edinburgh], to the Secretary of the Royal Society Requesting the return of his paper ['On the physics of media that are composed of free and perfectly elastic molecules in a state of motion']. [Request denied in response from Charles Richard Weld on 9 June 1846. Although the paper was referred to the archives by the Committee of Papers on 28 May 1846, it was published in 'Philosophical Transactions' half a century later.] 4 June 1846