_Origin of Adur_ (Vol. ii., p. 71.).--A, derived from the same root as Aqua and the French _Eau_, is a frequent component of the names of rivers: "A-dur, A-run, A-von, A-mon," the adjunct being supposed to express the individual characteristic of the stream. _A-dur_ would then mean the _river of oaks_, which its course from Horsham Forest through the Weald of Sussex, of which "oak is the weed," would sufficiently justify. It is called in ancient geography _Adurnus_, and is probably from the same root as the French _Adour_. C. The river Adur, which passes by Shoreham, is the same name as the Adour, a great river in the Western Pyrenees. This coincidence seems to show that it is neither a Basque word, nor a Saxon. Whether it is a mere expansion of _ydwr_, the water, in Welch, I cannot pretend to say, but probably it includes it. We have the Douro in Spain; and the Doire, or Doria, in Piedmont. Pompadour is clearly derived from the above French river, or some other of the same name. C.B. _Meaning of Steyne_ (Vol. ii., P. 71.).--Steyne is no doubt _stone_, and may have reference to the original name of Brighthelm-_stone_: but what the _stone_ or "steyne" was, I do not conjecture; but it lay or stood probably on that little flat valley now called the "Steyne." It is said that, so late as the time of Elizabeth, the town was encompassed by a high and strong _stone wall_; but that could have no influence on the name, which, whether derived from Bishop _Brighthelm_ or not, is assuredly of Saxon times. There is a small town not far distant called _Steyning, i.e._ the meadow of the stone. In my early days, the name was invariably pronounced Brighthamstone. C. _Sarum and Barum_ (Vol. ii., p. 21.).--As a conjecture, I would suggest the derivation of _Sarum_ may have been this. Salisbury was as frequently written Sarisbury. The contracted form of this was Sap., the ordinary import of which is the termination of the Latin genitive plural _rum_. Thus an imperfectly educated clerk would be apt to read _Sarum_ instead of Sarisburia; and the error would pass current, until one reading was accepted for right as much as the other. In other instances we adopt the Law Latin or Law French of mediæval times; as the county of _Oxon_ for Oxfordshire, _Salop_ for Shropshire, &c., and _Durham_ is generally supposed to be French (_Duresmm_), substituted for the Anglo-Saxon Dunholm, in Latin _Dunelmum_. I shall perhaps be adding a circumstance of which few readers will be aware, in remarking that the Bishops of Durham, down to the present day, take alternately the Latin and French signatures, _Duresm_ and _Dunelm_. J.G.N. "_Epigrams on the Universities_" (Vol. ii., p. 88.).--The following extract frown Hartshorne's _Book-rarities in the University of Cambridge_ will fully answer the Query of your Norwich correspondent.