The evidence by which Wallsend is identified with the _Segedunum_ of the Notitia is not so direct as could be desired. First in the list of officers ‘along the line of the Wall,’ the Notitia places the Tribune of the fourth cohort of the Lergi at SEGEDUNUM. Now, no inscription has been found in Britain mentioning the Lergi, but inscriptions have been found which mention the second and fourth cohorts of the Lingones; on the other hand, the Lingones never occur in the Notitia, but the cohorts of the Lergi which are there recorded, are the second and the fourth. This being the case, and the difference in the form of the Latin words _Lergorum_ and _Lingonum_ being very slight, the probability is, as Mr. Thomas Hodgson, in an able paper in the Archæologia Æliana, conjectures, that some early transcriber of the Notitia has written the one in mistake for the other. Within the precincts of Tynemouth Castle, in the year 1783, an altar was found, which formed part of the foundation of an ancient church. It is now in the possession of the Society of Antiquaries of London. The adjoining wood-cut accurately delineates it. The inscription may be read as follows: I[OVI] O[PTIMO] M[AXIMO] AEL[IVS] RVFVS PRAEF[ECTVS] COH[ORTIS] IIII LINGO NVM. To Jupiter the best and greatest, Ælius Rufus, The Prefect of Cohort the Fourth of the Lingo- nes. On the supposition, which is a natural one, that Tynemouth was a station subsidiary to Wallsend, this altar gives satisfactory proof that the first of the stations at the eastern extremity of the Wall is the SEGEDUNUM of the Notitia. On some occasion, when the prefect who commanded the estuary of the Tyne, was on a visit to this out-post, he erected to Jupiter, whom he ignorantly worshipped, the altar which still remains. [Sidenote: ORIGIN OF THE NOTITIA NAMES.] The etymology of the names of the stations is an interesting, but intricate subject. The new occupants of a country usually adopt the appellations bestowed by their predecessors upon its more prominent features. Thus, though in England the ancient Briton, Roman, Saxon, Norman, and modern English, have successively prevailed, many of our most familiar rivers, as the Thames, the Isis, and the Avon, have borne, as Whitaker shows, through each successive change, their present names. The appellations of cities are much more variable, but some even of these are indelible. Strange as a painted Briton of the first century would feel himself in the streets of modern London, its _name_ would fall on his ear as an accustomed sound.