BIBLIOGRAPHY : GKOLOCV AND PAI„i;ON TOLOGV, l88S. 133 



R. Taylor Mansox. Durham. 



The Sadberge Block [ilctails of an erratic block at Sadherge, three miles 

 N.E. of Darlington; encrinital blue limestone; recently iledicated as the 

 'Jul)ilee' Stone]. Nat., Jan. 1888, ]i. 22. 



K. Tayi.ok Manson. Durham. 



The Bulmer's Stone, Darling^ton [details of the erratic block in Nonhgate, 

 Darlington, known as the 'Huliner's' .Stone; Shap (Jranite]. Nat., [an. 

 1888, pp. 22, 23. 



J. K. Mark and K. H. Tiddkman. West Yorkshire. 



La Gtologie de I'Ouest du Yorkshire [notes for the excursion of the 

 International (leological Congress ; there are descriptions of the Ordovician, 

 Silurian, Carboniferous, and Permian rocks, of the chief earth movements in 

 the district, of the (Jlacial deposits, and of the Victoria Cave, besides a 

 bibliography and a coloured map. The chief points are Mr. Marr's treatment 

 of the Lower Pal.-eozoics, and Mr. Tiddeman's account of the two types of 

 the Carboniferous, the southern division of the area containing the coral-built 

 masses, which he terms 'knoll reefs']. Congres (ieologiipie International, 

 4i'>e .Session, Explications des Excursions, pp. 63-106. 



J. E. Makr and H. A. NirnoLsox. Westmorland. 



The Stockdale Shales [the authors have minutely studied these beds, dividing 

 them into a lower (Skelgill) and an upper (Browgili) division, with fifteen 

 zones characterised by special graptolites and trilobites ; these zones show 

 the closest correspondence with the Birkhill and Gala groups of .Southern 

 .Scotland : among the fossils described and figured are new species of Cheiruriis, 

 Acidaspis, Harpes, Aiiipyx, Froclus, and Atrypa\. (^uart. Journ. Ceol. .Soc. , 

 vol. xliv. pj). 654-732, and pi. xvi ; abstract in Geol. Mag. "(3) vol. v. pp. 327- 

 328; Phil. Mag., June (5), vol. xxv. jip. 519-520; Nature, May 31st, vol. 

 xxxviii. p. 118; Ann. and Mag. N. 11., July 1888, 6th Series, vol. ii. p. 117. 



P. H. Marrow. Isle of Man. 



A Geological Ramble in the Isle of Man [raised beach at Carrickey Bay 



alluded to, also conglomerate at Poolvash Bay, the so-called Poolvash marble, 



.Silurian schists and metamorphism, the Foxdale lead mines, etc.]. Trans. 



Liverpool Ceol. Assoc, 1886-7, vol. xiv. pp. 56-62. 



W. Mawer. Lincolnshire and Cumberland. 



Primer of Micro-Petrology [note on large boulder of an ophitic rock (dolerite) 



known as the ' Blue Stone,' at Louth, with figure of a microscopic slice ; 



pp. 67 and 12 ; also figure of chiastolite-slate from Skiddaw ; p. 52.]. 70 pp., 



i2mo., London, no date [1888]. 



Charles E, Miles. Lancashire and Cheshire. 



The Mersey Estuary (Abstract) [assumes that at the close of the glacial period, 

 when the river would be much shallower and extending further out to sea, 

 the mouth would, by tidal ox other action become barred by sand or clay ; 

 this would give rise to a lake, which slowly filling up by deposits of blue clay 

 arising from denuded boulder clay brought down by the river, would produce 

 marshy ground and suljsecpient peat ; in the course of time the erosion of the 

 sea would form the present estuary]. Trans. Liverpool Geol. Assoc, vol. vii. 

 1886-7, pp. 85-89. 



T. Carier Mitchell. Yorkshire. 



The Cundall Boulder [details of a boulder at Cundall, near Boroughbridge ; 

 Shap Granite]. Naturalist, Nov. 188S, p. 348. 



Kohert Mortimer. York E. 



The Youlthorpe Boulder [details of a boulder at Voulthorpe, between Bishop 

 Wilton and Stamford Bridge ; a very quartzose sandstone]. Naturalist, 

 Nov. 1888, p. 348. 



G. H. Morton. North of England generally. 



Early Life on the Earth [references to earliest species of Foraminifera 



recorded ; S(iiCai>i//iina carteri occurs in the Lower and Upper Bernicean of 



North umberland ; Arachnida — species are recorded from the Coal Measures 



May 1890. 



