56 J. W. DAYIS ON FISH-EEMAINS rOTTND IN THE 



6. On the Pish-kemains found in iJie Cannel Coal in the Middle 

 CoAL-MEASTJRES of the "West Riding of YoEEisHiRE, with the 

 Descriptions of some Kew Species. By James W. Davis, Esq., 

 P.S.A., P.G.S., &c. (Eead November 5, 1879.) 



In a paper I had the honour to read before this Society in 1876 *, 

 a section of the strata composing the West Eiding of Yorkshire 

 Coal-field from the Elland Elag rock to the Blocking Coal is given. 

 The Blocking Coal is probably the equivalent of the Silkstone Coal 

 of the more southern part of the Coal-field, and is regarded by the 

 members of the Geological Survey as the most convenient stratum 

 to form the dividing line between the Lower and Middle Coal- 

 measures. The coal-seams yielding the fossil fish-remains which 

 form the subject of the present paper occur about 400 feet higher 

 in the series than the Blocking Coal. The following section may 

 serve to give an idea of the position of the Stone- or Gas- coal of 

 Adwalton and the surrounding district : — 



ft. in. 



Thornliillrock 120 



Blue argillaceous shale 16 



Joan Coal 1 6^ 



Blue shale 24 



Coal 10 



Seat-earth ■. 6 



Blue shale, with layers of ironstone 13 



White earth, with bands of ironstone 7 



'Bla.ck shale, yvith Aiithracosics 3 



Adwalton Stone or Oannel Coal 1 10 



Seat-earth 2 



Strong white stone 17 



Blue shale , 4 



Black Coal 7 



White stones with shales 31 



Forty-yards Coal (Dewsbury Bank Coal, or the Mockton 



Thin or Adwalton Black bed) 3 



Seat-earth 3 



Blue shales, &c 43 



First Brown Metal Coal 2 



Strong sandy shale 24 



Second Brown Metal Coal, or Old Hards 1 10 



Seat-earth 3 



Soft blue shale, with ironstone 10 



Coal , 9 



Blue shale and ironstone 26 



Sandstone 20 



Blue shale 12 



Middleton Little Coal 2 10 



Seat-earth 4 



Measures with two thin coals 75 



Middleton Main OoAL, Cromwell Coal or New Hards 4 8 



Seat-earth with thin layers of coal intercalated 10 



Measures 35 



Middleton 11-yards Coal or Three-quarters Coal 2 6|- 



Measures 40 



Blocking OR Silkstone Coal 3 4 



^ Quart. Journ, Geol. Soc. 1876, vol. xxxii, p. 332. 



