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Almost perfectly protected from the searching reader under this C18-C19 Anglicism.--Wetman (talk) 12:06, 25 April 2008 (UTC)Reply

Error in stated gradient of Roman tunnel

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The article states that the gradient was 0.05% or 1 in 20. These cannot both be correct. 0.05% is 1 in 2,000 which seems very slight. On the other hand 5%, which is 1 in 20, seems too steep for a water course. Could someone with access to the sources please correct this.Exbrum (talk) 08:11, 1 April 2017 (UTC)Reply