on some Fossils from the Coal Measures. 23 



remains, a doubt has been thrown upon this opinion by the recent 

 discovery of an Ammonite, several Pectens, and one or two other 

 unquestionably marine shells in a nodule of iron stone, containing 

 also what has hitherto been considered an Anodon ; it was found 

 in the Hayne Moor bed of coal, in the Waterloo Colliery, near 

 Leeds, by E. J. George, Esq. F.L.S. The near situation to each 

 other of these marine bones and shells and of the land vegetables, 

 is a very curious fact. 



We have now, by permission of the Philosophical and Literary 

 Society of Leeds (to whom the specimen was given by John Field, 

 Esq. of the Low Moor iron works) the pleasure of presenting a 

 figure of a remarkable bony Plate, perhaps a Palate, also found in 

 coal. It is probably only half of the entire bone, for its thickest 

 edge, which measures about one quarter of an inch, presents a 

 fractured surface ; this surface shews a cellular structure, cha- 

 racteristic of the soft parts of bones attached to the Palates, 

 Fauces, or Stomachs of Fishes ; the tuberculated surface is po- 

 lished almost like the enamel of teeth, and finishes in a rounded 

 edge, beyond which there is a thin expansion of bone, that served 

 to steady the entire plate in the soft parts into which we may 

 suppose it was once inserted. It is of a dark brown colour, and 

 was imbedded in the pure part of the coal. 



We are indebted to E. J. George, Esq. of Leeds, for the fol- 

 lowing account of its locality. J. D C. S. 



The fossil above described is from the thick coal at Tong, 

 near Leeds, a coal known throughout the northern part of the 

 Yorkshire coal-field as the Beeston Seam. It is a seam of variable 

 thickness, being at Garforth, where it is covered by (he uncon- 

 formable magnesian limestone, 6 feet ; at Beeston, 9 feet ; and at 

 Tong from 6 to 7 feet. 



The seam is divided by partings of white earth (indurated shale) 

 into beds; those at Beeston are three, at Tong two; it is probable 

 that the decrease in thickness from Beeston to Tong, is occa- 

 sioned by the separation of the lower bed ; this has been ascer- 

 tained to be the case at Churwell, where the lower bed is parted, 

 from the upper nine yards. 



