part I] THE WESTPHALIAK, ETC. Of EAST GLAMORGAJr. 55 



that Neuro'pteris was found in abundance. Cordaite-leaves were 

 also frequently noticed. Equisetales represented two-fifths of 

 the whole of the plants. 



The Six-Foot Seam (Table V & fig. 6, pp. 42-43).— This 

 seam rests 45 feet above the Nine-Foot Seam at the Trane Colliery. 

 The shales overlying the seam were of a coarse grain, similar to 

 those of the Nine-Foot Seam below. The beds here were some- 

 what more massive. No plant-remains were found in the shales 

 immediately above the seam. At a position from 6 to 10 feet higher 

 in the series fossiliferous beds were observed, and shales were taken 

 from this point and from three other areas, each area being about 

 500 yards from the shaft. Work in this seam has but recently 

 commenced, and consequently the area available for examination 

 is very limited. The points from which the shales were obtained 

 lie east, north, and south of the shaft. Of the Equisetales, 

 Aster o-pliylliies. occurred in great profusion throughout the blocks 

 of shale, the other genera belonging to this class being rare. 

 A striking result of the examination is the absence of Spheno- 

 phyllales. Lycopodiales are also rare. The Filicales and Pterido- 

 sperms are strongly represented, and Neiiropteris was found in 

 great abundance, the other remaining genera being poorly repre- 

 sented. Cifclopteris {ov Aphlehia) was rather common. Cordaite- 

 leaves were also found in good numbers. The rachis of ferns or 

 fernlike plants dominated the plants of other classes. 



The Two-Foot Nine Seam (Table VI & fig. 7, pp. 44-45), 

 at the Cambrian Collieries, Ctydach Vale, is 135 feet above the 

 Six-Foot Seam. The shales overlying the seam are massive, black, 

 and of bituminous character. 



Two bands of black shale, 8 and 22 feet respectively above the 

 seam, were found rich in plant-remains. A marked change was 

 noticed here in the flora, Beds of shale about 10, 24, and 30 feet 

 respectively above the seam were observed to yield plant-remains, 

 the intervening strata being barren of fossils. The shales were 

 taken from two distinct areas about 1000 yards from the shaft 

 (No. 4 Pit), in directions due west and north-west respectively 

 from the shaft. Equisetales were scanty, and only two genera 

 were found belonging to this class. Sphenophy Hales are again 

 absent. Lycopodiales occurred in great abundance for the first 

 time at the different horizons. Lepidodendron occm-red through- 

 out the shales, and easily dominated the other genera of this class, 

 although Sigillaria was not by any means rare. Specimens of 

 the rachis of ferns or fernlike plants were practically absent from 

 the shales, but Cordaite-leaves were fairly well represented. The 

 Lycopodiales represent more than three-fifths of the whole assem- 

 blage of plants recorded. 



The Pentre Seam. (Table VII & fig. 8, pp. 4G-47), Trane 

 Colliery, Gilfach Goch, occurs 495 feet above the Four-Foot Seam, 



