Vol. 70.] FOSSIL FLOEA OF THE KENT COALFIELD. 57 



The number o£ specimens obtained from the Middle Coal 

 Measures was too few to indicate which were the more abundant 

 species. 



Middle Coal Measure Flora of Barfreston. 



Equisetales. 



Calamocladus equisetiformis (Schloth.). 

 Annularia radiata (Brongn.). 



Pteridosperme^ and Filicales. 



Splienopteris obtusiloba (?) Brongn. 

 S. (Renaultia) sp. 

 Neuropteris obliqua (Brongn.). 

 N. tenuifolia (Schloth.). 

 Pecopteris miltoni (Artis). 



CORDAITALES. 



Cordaites borassifolius (Sternb.). 



All the Middle Coal Measure records are common plants, but 

 there are several from the Transition Measures of more particular 

 interest, in addition to the exceptional specimens of Dictyocalamites 

 hurri Arber and Pterophyllum sp., already recorded. 1 Mario- 

 pteris latifolia Brongn. (PL XII, fig. 4, see p. 71) and Neuro- 

 pteris (Cyclopteris) Jlmbriata Lesq., have not been previously found 

 on this horizon in Britain. Pecopteris crenulata Brongn. (PL XI, 

 fig. 3, see p. 73) has hitherto been only known with us to occur 

 but rarely in the Upper Coal Measures. 



III. The Tilmanstoxe Sltstexng. 

 (Lat. 51° 13' N., long. 1° 16' E.) 



In November 1912, when the shafts of Tilmanstone Colliery had 

 entered the Coal Measures, the following plants were obtained from 

 the highest beds of the measures penetrated by these sinkings : — 



Neuropteris obliqua (Brongn.). Lepidodendron lycopodioides Sternb. 



Alethopteris lonchitica (Schl.). LepidopJiyllum sp. 



Pecopteris miltoni (Art.). Lepidostrobus sp. 

 Pecopteris sp. 



None of these plants are indicative of one particular horizon ; 

 but, since the same flora is also found in the highest beds of 

 the Barfreston boring, I have little doubt that the measures at 

 Tilmanstone belong to the Transition Coal Measures. 



IV. The Goodxestone Boeing. 

 (Lat. 51° 14' N., long. 1° 14' E.) 



This boring, near the village of Goodnestone, proved 1718 feet 

 of measures, of which I assign the upper 312 feet or thereabouts to 

 the Transition Coal Measures, and the lower -f 1406 feet to the 

 Middle Coal Measures, in which the boring ended. A fair number' 

 of fossil plants, though not as a rule well preserved, were obtained 

 from the higher beds ; but the lower were exceptionally barren. 



1 Arber (1912). 



