1859.] LANCASTER AND WRIGHT SHIREOAK COLLIERY. 137 



has not been able, in the numerous Holoptychii that he has seen, to 

 regard as distinct the differences pointed out in the descriptions of 

 these two reputed species. 



Dr. Anderson also offered some remarks on the Olyptopomus minor 

 (Agass.), the specimen of which was obtained from this locality ; and 

 he drew attention to two as yet undcscribed fishes*, also from Dura 

 Den. 



June 1, 1859. 



James Lamont, Esq., Knockdow, Argyllshire, and William Long- 

 man, Esq., 36 Hyde Park Square, were elected Fellows. 



The following communications were read : — 



1. On the Sinking at Shireoak Colliery, Worksop, to the " Top 

 Hard Coal" or " Barnsley Coal." By John Lancaster, Esq., 

 and Charles C. Wright, Esq., F.G.S. 



As the sinking at Shireoak to the " Top Hard or Barnsley Coal " is 

 not only in a new district, but has also been carried through a con- 

 siderable thickness of Permian rocks and Coal-measures which have 

 not been proved elsewhere, we venture to think that our sections 

 and some account of the strata passed through will be of interest to 

 this Society. 



In March 1854 Mr. Lancaster commenced sinking two pits for 

 the Duke of Newcastle on the north-western side of his Worksop 

 Manor Estate, where the Coal-measures are overlaid by a consider- 

 able thickness of Permian rocks. A bore-hole had been sunk some 

 years previously on the same estate by Mr. John Woodhouse, to 

 prove the minerals ; and, though it was carried to a depth of more 

 than 300 yards, no satisfactory results were obtained, no workable 

 coal or ironstone being found. 



* These specimens having been submitted to Prof. Huxley for description, have 



boon res] tiveh named by him Phaneropleuron Anthnoni and Gftyptolamxu 



K 8 ■ • Dura Den ; a Monograph of the Yellow .Sandstone.' A<\, h\ 



.1 bidewon, D.D., F.O.S. 1859. 



Tabh 



