It is supposed that _Dun_ was a nickname applied to the ass from his colour, in the same way as _Burnell_, in the _Chester Whitsun Playes_, MS. Harl. 2013., and _Russell_ applied to the fox, _Canterbury Tales_, v. 15340. As to the termination _key_, it is probably (as in _monkey_, _jockey_, which are the only words of similar formation which I can call to mind at present) the same as _kin_, which has the force of a diminutive in words like _lambkin_, _mannikin_, &c. JUVENIS. _Sir Samuel Garth_ (Vol. v., p. 151.).--I believe it will be found difficult to find the place of this celebrated physician's birth. In the fourth volume of Mr. Surtees' _History of the County of Durham_, pp. 26, 27., there is an interesting account of him, to which is added a pedigree of his family. Surtees, in a note, says: "There is no trace of his having ever revisited the north, and I have in vain endeavoured to glean anything of correspondence, or of traditional anecdote." FRA. MEWBURN. Darlington. _Princes of Wales and Earls of Chester, &c.: Mr. Bush's Collection_ (Vol. v., p. 178.).--I suspect Mr. Bush's proposed collection was never published. In an old MS. account of the Fellows of King's, I find the following extract. I copy it as it stands: "1718. "Cha. Bush, of Harmondsworth, Middx. Res on being denied his Degree of A. B. in College from Party.... A Clk. of the Record Off. in the Tower, 1725. April 27, 1726, he published _proposals for printing by Subsr_. A lott of Charters and Letters Patent, and other Instruments concerning the Creation and Investiture of the eldest sons of the K's of Engl. as Princes of Wales, D. of Cornwall & E. of Chester & Flint, together with several Extracts out of the Parl. Rolls relating to the Honor, Dignity, & Estate of the P. of Wales, from the time of Edward first, P. of Wales (afterwards K. E. 2) to the time of E. 4. inclusive, faithfully collated from the Records of the Tower by C. B. one of the Clks. of the Record Off. in the T. & late Fell. of K. C. C. "He was taken into the Ordnance Office to assist in methodising the Papers belonging to it, and was after Sec. to the Board of Ordnance." It would seem Mr. Bush's proposals did not meet with a favourable reception, or perhaps his removal to an important government office prevented his fulfilling his intentions. It is to be hoped he returned his subscriptions (if any). J. H. L. _Litera scripta manet_ (Vol. v., p. 200.).--The following extract, if not complete answer to the query on _Litera scripta manet_, is a curious instance of the early use of that maxim, and I transcribe it with pleasure as a specimen of one of the best informed and most interesting of our medieval prose writers. I rely, as to orthography and punctuation, on Joseph Ames: