88 Origin of the British Flora. 



Selsey, Sussex. 



(Reid, ' The Pleistocene Deposits of the Sussex Coast, 

 and their Equivalents in Other Districts,' Quart. Jonrn. 

 Geol. Soc, Vol. XLVIII., pp. 344-366. 1892.) 



Carbonaceous river-mud here overlies Glacial erratics 



and underlies the Palaeolithic deposits. The river-mud is 



apparently of Interglacial date, and corresponds closely in 



position and fossil contents with the strata found at West 



Wittering and Stone. The plant-remains consist of drifted 



seeds, Acer mouspessulanum giving a southern aspect to 



the flora : — 



Acer monspessulanum. Atriplex patula. 

 Prunus Avium. Polygonum aviculare. 

 Padus. Ouercus Robur. 



Rubus fruticosus. Zannichellia palustris. 



Rosa. Scirpus pauciflorus (?). 



Ajuga reptans. Carex distans (?). 



Shacklewell, Middlesex. 



(Prestwich, ' On a Fossiliferous Deposit in the Gravel 

 at West Hackney,' Quart. Journ. Geol. Soc., Vol. XL, 

 p. 107. 1885; Reid, 'Pleistocene Plants from Casevvick, 

 Shacklewell and Grays.' Ibid. Vol LI 1 1., pp. 463, 464. 

 1897.) 



Peaty clay is found beneath 8 or 10 feet of gravel. 

 Though none but British species of Mollusca or plants 

 have yet been discovered, the geology suggests a con- 

 siderable antiquity. The plants are Temperate species : — 



Ranunculus repens. Lycopus europaeus. 



Rubus Idaeus. Alnus glutinosa. 



Rosa. Ouercus Robur. 

 Eupatorium cannabinum. 



SlDESTRAND, NORFOLK. 

 (Reid, ' Geology of the Country around Cromer.' 1882 ; 

 and ' Pliocene Deposits of Britain,' Mem. Geol. Survey. 

 1890.) 



