BRITISH ISLES. 10 



thick-bedded, much-jointed limestone. It lies close to a synclinal fold. 

 the underlying Carboniferous slate appearing at the N. shore of tho 

 channel and at Spike Island, The limestone has undergone great 

 changes subsequent to the flexures which affect it, the bedding being 

 almost obliterated, as also to a great degree its organic structure; and 

 the rock is crossed by many veins of calcite, often stained by iron-oxide, 

 the alteration being effected by water charged with carbonic acid, to 

 the action of which the physical circumstances of the beds presented 

 favourable conditions. The highly flexured beds are in parallel ridges 

 and valleys trending nearly E. Of the period when the flexures were 

 formed there is no evidence, there being no formation newer than 

 Carboniferous ; but, arguing from analogy, and by comparison with the 

 districts of Somersetshire and S. AVales and of Lancashire and York- 

 shire, the author concludes that the Carboniferous and Devonian rocks 

 of the S. of England and Ireland were folded along the main line of 

 flexures, so persistent immediately upon the close of the Carboniferous 

 and before the Permian period. E. T. H. 



Hull, Prof. Edward. The Age of the Rocks of Charnwood Forest. 



Nature^ vol. xv. pp. 78, 116. 

 Ilefers the rocks of this area to the Cambrian of the Geological 

 Survey, rather than to that of the Llandeilo or Caradoc beds. 



. The Scarle Boring, Lincolnshire. Oeol. Mag. dec. ii. vol. iii. 



p. 95. 

 Begins in the L. Lias, and reaches Coal Measures at 1900 feet. 



Irving, Rev. A. Some Recent Sections near Nottingham. Quart. 

 Journ. Geol. Soc. vol. xxxii. pp. 513-515. 



Refers to a paper by E. Wilson (see p. 40), to the age of the 

 " Rotherham Rock," to the sections of Runter and Keuper exposed in 

 the railway cuttings, and to the faults of the district. W. T. 



Report of Excursion to Grantham and Nottingham. Proc. 



Geol. Assoc, vol. iv. no. 8, ])p. 491-497. 

 Describes sections of Lincolnshire Oolites in Great and Little Ponton 

 railway cuttings, the relations of the New Red to the Permian as seen 

 at (Jinder Hill, Kimberley, &c. At Cinder Hill a fault throws the Coal 

 Measures 00 yards more than it throws the overlying Permian. The 

 notes are supplied by Rev. A. Irving, W. H. HoUoway, E. Wilson, and 

 R. Fowler. W. 'i\ 



Jack, R. L. The Geology of Glasgow and the Neighbourhood. Set. 



(JoHs. no. 141, pp. 19:3-197. 

 Notices the canoes that have been dug np in the city ; the striated 

 rock-surfaces ; the Boulder tlay and the stratified clay, with shells 

 (interglacial); tho Kaims ; the basaltic dykes, one 40 miles long; the 

 Coal Measures, with the black-band ironstone ; the Millstone Crit, with 

 fire-clay ; the Carboniferous Limestone series, which hero consists of a 

 few beds of limestone in a mass of sedimentary beds, with coal and 



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