The object of the present communication is to lay before the Society of Antiquaries of London, first, a concise history of the extraordinary variations of opinion among the antiquaries who have devoted themselves to the study of the Roman antiquities of Britain, respecting the site of a station the name of which is preserved by Antonine, Cambodunum or Camulodunum, the copies of the Itinerary varying; and secondly, a piece of evidence which I have lately discovered which seems to me to go very far towards determining this long doubtful and unsettled question. I may add that if the evidence which will be produced is thought sufficient to establish the point, the opinion respecting the site of Cambodunum which has now for more than half a century had possession of the public mind will be shewn to be untenable, and a course of one of the principal roads made, or at least used, by the Romans, be shewn to be drawn with more of the wisdom which is justly attributed to that wise and noble people.