601 



the surface, tapped a spring which flows with great violence and 

 throws up white sand. 



Lytchett. At various places in this parish, peat bogs and buried 

 trees occur, particularly at Bulbury Bay. They are, however, consider- 

 ably above the level of the sea ; but on the north east side of Lytchett 

 Bay, at the extremity of the canal from the clay works, is a subsided 

 peat bog thirty feet thick, containing trees. It rests upon mottled 

 day, and is overlaid by nine or ten feet of clay and sand which are 

 constantly covered by two feet of water. 



In the pits where the subjacent mottled clay is excavated, springs 

 of great volume burst forth whenever the main body of water is tap- 

 ped, and the author is of opinion that this subterranean stream may 

 have caused the subsidence of some of the peat bogs, in consequence 

 of its undermining action. 



In alluding to the accumulations of mud in Poole Harbour, the 

 author states, that in digging a well in West Street in the town of 

 Poole, a mass of sea- weed was found, with remains of an ancient en- 

 bankment at the depth of six feet, and a furlong from the present 

 high water mark. 



