Deposits containing Fossil Plants, 57 



A is Recent or Neolithic. C, from the occurrence of 

 Salix herbacea and Apus glacialis, is classed as Late 

 Glacial. D and F are provisionally classed with C, but 

 may belong to a milder, Interglacial, period. These 

 deposits, and those found at Close y Garey, occupy 

 silted-up hollows in the glacial gravel. It is not yet clear 

 whether the poverty of the flora, and the entire absence 

 thus far of remains of dry-soil plants, is due to the 

 barren water-logged character of the gravel-flat, or is 

 characteristic of the flora of the Isle of Man at these 

 periods. 



Barry Docks, Glamorgan. 



(Strahan, ' On submerged Land-surfaces at Barry, Gla- 

 morganshire. With Notes on the Fauna and Flora by 

 Clement Reid,' Quart. Journ. Geol. Soc, Vol. LIT., 

 pp. 474-489. 1896.) 



The newest of these, about 4 feet below mean tide, 

 yielded a polished Neolithic implement and also, according 

 to Mr. Storrie, logs of Willow, Pine, and Oak. An 

 associated shell-marl was full of freshwater shells and 

 seeds of: — 



Rumex crispus. Potamogeton. 



Atriplex. Najas marina. 



Salix (leaves). Chara, 2 species. 



Najas marina is now confined to east Norfolk. 



The second peat, or land-surface, is composed mainly 

 of sedges {Scirpus maritimus) and lies about 9 feet below 

 mean-tide level. 



The third peat is composed of large timber and matted 

 Sallow and Reed, with seeds of Valeriana officinalis and 

 Carex. It lies 20 feet below Ordnance Datum, but shows 

 no sign of the influence of salt water. 



The fourth peat is a true submerged land-surface, full 



