Nature . banks. The width of the Humber below thejunction averages about 4500 feet, and this channelalso feeds the Ouse, which is a continuation of theHumber. This width is double that of the Trentand Ouse combined. The rise of ordinary springtides at Trent mouth is 15 feet, increasing at equi-noctial tides to 19 feet. The tide has a run of47 miles up the Trent, and reaches to 87 miles fromthe North Sea, the flood lasting three hours and theebb nine hours. The bore, or aeger, is caused by the check ofthe tidal flow through the shoal water of the sandbanks and the contraction of the waterway, t
Nature . banks. The width of the Humber below thejunction averages about 4500 feet, and this channelalso feeds the Ouse, which is a continuation of theHumber. This width is double that of the Trentand Ouse combined. The rise of ordinary springtides at Trent mouth is 15 feet, increasing at equi-noctial tides to 19 feet. The tide has a run of47 miles up the Trent, and reaches to 87 miles fromthe North Sea, the flood lasting three hours and theebb nine hours. The bore, or aeger, is caused by the check ofthe tidal flow through the shoal water of the sandbanks and the contraction of the waterway, the tidalcurrent overrunning the transmission of the foot ofthe wave. It first assumes a crest somewherebetween Burton Stather, 3 miles from the mouth ofthe Trent, and Amcotts, 2 miles further on, dependingon the condition of the tide, the water rising almostsimultaneously 3 feet. In ordinary spring tides thebore does not extend more than 7 or 10 miles aboveGainsborough. In high spring tides it diminishes. The Aeger in the Tient. to i foot in height at Torksey, 35 miles from themouth of the river, and then graduallv dies out. The bore was to be seen under exceptionally favour-able conditions on September 30 and October 1 last,being the second and third days after the new tides were laid down in the Admiralty tide tablesfor the Humber as the largest of the year. Themoon was in perigee on September 29, and degrees south declination. The wind was to , a direction which brings the largesttides, and was blowing at Spurn with a force of from6 to 7. Inland the force was only about 3 on theBeaufort scale. There was a limited quantity offresh water running down the river, the velocity atlow water being 2 miles an hour. The depth in thechannel between Gainsborough and the Humber isnow about 6 feet, but there are several shoals withnot more than 2 feet to z\ feet over them. The tidewas exceptionally high, rising in the Humber at Hullnearly 3 feet higher than
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