ehjEtic system. n 



from an undoubted Ehsetic locality. The specimens referred by 

 Buckman to the Angiosperms, and doubtfully spoken of as 

 Hippurites and as traces of Umbelliferas and Ericaceae, are of no 

 botanical value and cannot be determined. In a paper by Sorby 

 published in vol. vii, of the Transactions of the Microscopical 

 Society of London, a specimen of wood is described from the Lias 

 of Keynsham, near Bristol.' Sorby's figure shows that the 

 structure is that of a typical Dicotyledon ; the fossil was purchased 

 from a dealer, and the locality is given with some hesitation. 

 It is in the highest degree improbable that the wood was obtained 

 from Ehsetic rocks. 



The list of Ehsetic fossils given by Mr. H. B. "Woodward^ in the 

 Geological Survey Memoir on the East Somerset and Bristol Coal- 

 fields includes three plants — Fucoides, Naiadita acuminata (?), 

 Buck., and Fquisetites. The name Naiadita acuminata was 

 used by Buckman in his description of new species of plants 

 included in Murohison's Geology of Cheltenham ; ' it was no 

 doubt applied to the same plant which Buckman also named 

 Naiadita lanceolata. 



In 1891 Mr. E. Wilson'' published a detailed description of an 

 unusually good section of Ehaetic beds exposed in a deep railway 

 cutting at Pylle Hill, Totterdown, Bristol. He mentions the 

 occurrence of Naiadita in a bed of limestone in the Upper Ehsetic 

 series, and points out that the plant was spoken of by Brodie and 

 Buckman as having been derived from the Lias. A redescription of 

 the Pylle Hill section was published in 1900 by Mr. Wickes, who 

 speaks of one of the Ehsetic beds as " being in some zones full 

 of the little water-plant Naiadites acuminatus in a fine state of 

 preservation." ^ The plant-genus Naiadita, which has long been 

 regarded as of uncertain botanical position, has recently been 

 carefully examined by Miss Igema Sollas," who brings forward 

 good evidence in support of her conclusion that Naiadita lanceolata 

 must be referred to the Lycopodiaceae. 



1 Sorby (52). 



2 Woodward, H. B. (76), p. 90. 



3 Murchison (45), p. 93. 

 * Wilson (91). 



'• Wickes (00), p. 422. 

 « Sollaa, I. B. J. (01). 



