asked the Minister of Agriculture whether he is aware that, on the most recent edition of the Ordnance Survey maps, the source of the River Thames is shown as Thames Head, in the parish of Coates; and, in view of the fact that the source known as Seven Springs, in the parish of Coberley, is further from the estuary, he will undertake that in the next edition of the Ordnance Survey Maps the correct source will be marked?
I understand that it is not an invariable rule in geographical practice to regard as the source of a large river the source of the tributary most distant from its estuary. I am advised that the source of the Thames or Isis is the spring known as "Thames Head," and that the leading authorities agree that the name of the stream which rises at Seven Springs is the "Churn." In these circumstances it does not appear that the alteration suggested would be justified.
Is my right hon. Friend aware that it is true that the river which rises in my hon. Friend's constituency has always been called Churn since the days of the Ancient Britons, and that the river in my right hon. Friend's constituency has only recently been called Thames, and that probably the real Thames is the stream known as Will-brook, which rises in the constituency of the hon. and gallant Member for Chippenham (Captain Cazalet)?