Wa7'ping. 



105 



tide is exhausted. During the other nine or ten hours the tide 

 is on the ebb and the flow of the water is down stream, the 

 water level falling to its lowest point, or low water, when the 

 tide once more comes in. 



In the Trent and Ouse during the equinoctial tides in April 

 and October this reversal of the direction of the flow of the 

 water is accompanied by a tidal wave or " oegre " varying in 

 different parts of the river (and influenced also by the wind) 



from a height of one foot to five feet or possibly more. The 

 writer remembers upon one occasion being in the middle of 

 the Trent in a boat watching the oegre as it advanced. When 

 twenty or thirty yards away he stood up with a view to 

 estimating the height of the wave, and it appeared to him to 

 be al)out on a level with his eyes. 



After the wave has passed the tide rushes up the river at 

 high velocity, heavily charged with warp. The continuous 

 and apparently inexhaustible supply of warp is, we are 

 informed, due to coast erosion always taking place. The 

 warp comes up stream with the tide, and is not brought down 

 by the river, as is often thought to be the case, by persons 



