20 GEOLOGY. 



ironstone ; the volcanic lavas and ashes of Kilpatrick, &c. ; the necks or 

 plugged -up vents of old volcanoes ; and the Calciferous Sandstone, lying 

 nncon form ably on the Lower Old Eed. All of these rocks occur within 

 20 miles of Glasgow, which stands in the centre of a basin. W. W. 



Jenkinson, H. I. Practical Guide to the Isle of Wight. 8vo. 



London. 

 A chapter on the geology gives a summary of the characters of the 

 various formations, with a "new theory" that the vertical and arched 

 beds of Chalk and Lower Tertiaries were deposited in that position. 



W. H. D. 



Jones, Prof. T. R. Note on an Annelid Bed in the Gault of Kent. 



Geol. Mag. dec. ii. vol. iii. pp. 117, 118. 

 Describes a hard band of clay, 2 inches thick, full of Annelids, near 

 Charing, Kent. 



The Sarsen Stones. Geol. Mag. dec. ii. vol. iii. p. 523. 



At Avebury and Marlborough are Sarsen stones penetrated by ver- 

 tical rootlet-holes and horizontal casts of stems, &c. 



Jordan, Henry K. The Pencoed, Mynydd-y-Gaer, and Gilfach Goch 

 Mineral Districts. Proc. S. Wales Inst. Eng. vol. ix. pp. 250-270, 

 pis. 29-33 (map and sections). 



Describes the coal-seams, faults, and flexures of the above districts, 

 giving a list of minerals. 



Kendall, J. D. Haematite in the Silurians. Quart. Journ. Geol. Soc. 

 vol. xxxii. pp. 180-183; 4 woodcuts. 



The Silurian beds at MiUom, Cumberland (Water-Blean Mines), are 

 inverted., the Coniston flags dipping under the Coniston Limestone. The 

 haematite occurs along the beds of the limestone. W. T. 



Kinahan, G. H. Irish Drift. Subgroup — Meteoric Drift. Journ. 

 R. Geol. Soc. Ireland^ ser. 2, vol. iv. pt. iii. pp. 115-121 ; 4 wood- 

 cuts. 

 Meteoric Drift may be formed by the actual weathering of some rocks 

 into clays ; also by the weathering of older Drifts, and the rearrange- 

 ment of true Glacial Drift, for which it may be often mistaken. A 

 sub-variety is the JEolian Drift : sand-dunes, blowing sands, &c., many 

 sands and sandstones of supposed aqueous origin, may have been thus 

 formed. E. T. H. 



An Outlier of Glacialoid or Ilearranged Glacial Drift on 



Stratified Gravel (Esker Period), Mourne Demesne, County Down. 



Journ. R. Geol. Soc. Ireland, ser. 2, vol. iv. pt. iii. pp. 122, 123 ; 



4 woodcuts. 



This Drift, which has been taken for Upper Boulder Clay, rests on 



gravels ; but the conditions of the ground rather point to its being a 



rearranged Drift ; and sketches showing how this might arise are given. 



E. T. H. 



