part 1] ARCTIC FLOEA OF THE CAM TALLEX. 17 



Appendix I. 



Notes on Certain Species recorded at Barnwell. 



Salix repens. 



This plant was represented at Barnwell by its leaves, and, 

 if we judge by their abundance, it must have occupied considerable 

 areas. As it is a chalk-hating (calcif uge) plant, it may either have 

 lived in the lowland tract where the beds below the Chalk were 

 exposed, or it may have occu^Died areas covered b}^ gravels of some 

 thickness, higher up-stream, on the Chalk outcrop. 



Draba iJfCANA and Cochlearia officinalis. 



These two Crucifers are well-known instances of plants which 

 flourish in Arctic-Alpine situations, but also along sea-coasts. Since 

 however, they are very common and widely-distributed Arctic j)lants, 

 it seems probable that their presence in the Barnwell Flora was 

 due to climatic conditions rather than to tidal influence, wherefore 

 they are classed with the Arctic, and not with the estuarine plants 

 in this paper. 



Appendix II, 



The Barnwell Flora, showing the Distribution of the Fossil 

 Plants through the Different Seams. 



The following abbreviations are used for the seams examined : — 



Lowest = The lowest seam in the section. "^ 



X = The lowest seam but one in the section. This 

 was the seam examined by Mr. Clement Eeid 



In the sec- 



several additions to his list have since been made, y tion below 



X = A seam above the gravel- wedge. the tramway. 



4 Pari. = Four thin, closely-associated, parallel seams above 



the gravel-wedge. 



M.A.T. = The middle one of three seams at the point indicated ] In the sec- 



in fig. 1, pp. 6-7. Uion above 



T.A.T. = The highest of three seams at the same point. J the tramway. 



This terminology was employed in labelling the actual specimens, which 

 have been deposited in the Sedgwick Museum. 



Q. J. G. S. No. 305. 



