The Severn valley: a series of sketches, descriptive and pictorial, of the course of the Severn: containing notices of its topographical, industrial, and geological features; with glances at its historical and legendary associations (1862)
Randall, John, 1810-1910 · London, J. S. Virtue · leaf 277
263 THE SEVERN VALLEY. Protruding into the channel on either side^ the rocks check the upward flow of the tide^ impelling it with increasing rapidity into the mouth of the Wye^ so that … steamers having to combat this deep-rolling river, take advantage of its upward rush, and upon missing it generally wait for its return.
Severn River Valley (Wales and England) -- Description and travel
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