114 MR. R. L. SHEELOCK ON THE EBLATIONSHIP OF THE [Feb. I9II, 



The conf ormability of Permian and Bunter in this district removes, 

 therefore, the only exception to the rule, and tends to prove that 

 in England there is a New Red Sandstone System comprising all 

 the strata between the Carboniferous and the Jurassic Systems. 



Y. Summary. 



1. In Nottinghamshire the Permian and the Bunter are shown 



to be conformable. 



2. Part of the ' Bunter'* of South Nottinghamshire is contempo- 



raneous with the Upper Magnesian Limestone of North 

 Nottinghamshire ; and the ' Bunter ' of South Notting- 

 hamshire, as a whole, is contemporaneous with the upper 

 part of the Magnesian Limestone Series of Durham. 



3. An explanation of the mode of origin of the White and Red 



Sandstones of Mansfield is given. 



4. The palaeontology of the Upper Magnesian Limestone is 



discussed, and the evidence derivable from the fossils is shown 

 to be not unfavourable to the view stated in 2. 



VI. Bibliography. 



Aveline, W. T. — 'The Magnesian Limestone & New Eed Sandstone in the 

 Neighbourhood of Nottingham ' Geol. Mag. dec. 2, vol. iv (1877) pp. 155-56. 



Aveline, W. T. — ' The Kelation of the Permian to the Trias ' Ibid. p. 380. 



Aveline, W. T. — 'The Geology of Parts of Nottinghamshire & Derbyshire ' Mem. 

 Geol. Surv. 2nd edit. 1879. 



Aveline, W. T. — ' The Geology of the County around Nottingham ' Mem. Geol. 

 Surv. 2nd ed. 1880. 



Aveline, W. T. — ' The Geology of Parts of Nottinghamshire, Yorkshire, & Derby- 

 shire ' Mem. Geol. Surv. 2nd edit. 1880 (No. 2). 



Aveline, W. T., A. H. Green, J. R. Dakyns, J. C. Ward, & R. Russell. — 

 ' The Geology of the Carboniferous Rocks North & East of Leeds, and the 

 Permian & Triassic Rocks about Tadcaster ' Mem. Geol. Surv. 1870. 



Binnet, E. W. — 'Sketch of the Geology of Manchester & its Vicinity' Trans. 

 Manch. Geol. Soc. vol. i (1841) pp. 35-66. 



Binney, E. W. — 'On the Relation of the New Red Sandstone to the Carboniferous 

 Strata in Lancashire & Cheshire ' Q. J. G. S. vol. ii (1846) pp. 12-26. 



Bonney, T. G. — ' On the Evidence for Desert Conditions in the British Trias ' Geol. 

 Mag. dec. 5, vol. v (1908) pp. 337-41. 



Cantrill, T. C. — ' On the Occurrence of Spirorbis-Limestone & Thin Coals in 

 the so-called "Permian" Rocks of Wyre Forest; with Considerations as to the 

 Systematic Position of the "Permians" of Salopian Type' Q. J. G. S. vol. Ii 

 (1895) pp. 528-548. 



Chamberlin, T. C, & R. D. Salisbury. — ' Geology ' vol. ii (New York & London, 

 1906). 



De Rance, C. E. — ' 11th Report of the British Association Committee on Under- 

 ground Waters ' Rep. Brit. Assoc. (Aberdeen) 1885, pp. 380-95. 



Dunston, G. — ' The Eastern Extension of the Midland Coalfield, & the Explor- 

 ation at Southcar ' Trans. Inst. Min. Eng. vol. xii (1896-97) pp. 515-24. 



Durnford, H. St. J. — 'Deep Boring at Barlow, near Selby' Ibid. vol. xxxiv 

 (1907-1908) pp. 426-48. 



Ebert, Th. — ' Ueber die Art des Vorkommens & die Verbreitung von Gervillia 

 murcliisoni Geinitz im Mittleren Buntsandstein ' Jahrb. K. Preuss. Geol. 

 Landesanst, 1888 (1889) pp. 237-42. 



Fox-Strangways, C. — ' Sections along the Lancashire, Derbyshire, & East Coast 

 Railway between Lincoln & Chesterfield' Q. J. G. S. vol. liv (1898) pp. 157- 

 68 & pi. x. 



