BRITISH ISLES. 25 



metamorphism ; for there is a complete gradation from schists through 

 gneiss to granite. There are, however, other granites which are clearly 

 intrusive ; these are " of two ages, one being pre-Llandovery but post- 

 Cambro- Silurian, and the other post- Llandovery and probably pre- 

 Wenlock." The Plutonic rocks are felstones and whinstones ; each are 

 of five different ages, the newest whinstones being Carboniferous. The 

 oldest of each are metamorphosed. 



The faults are traced out in detail, and they are shown to coincide 

 with the main valleys. One of the most continuous faults is post- 

 glacial ; the others are of various ages, some being probably Cambro- 

 Silurian. The paper concludes with a summary of the facts observed 

 and the inferences drawn. There is no record in this . area of any 

 events between the Carboniferous and the Glacial periods. W. T. 



LoBLEY, J. L. Excursion to Malvern. Proc. Geol. Assoc, vol. iii. 

 no. 6, pp. 269-280. 



Notices the chief geological features of the district, mentions Ragged- 

 Stone Hill as the roots of a volcano of Cambrian age, and notes the 

 occurrence of fossils in Upper Keuper Sandstone near Berrow. W. W. 



Lucy, W. C. Glaciation in West Somerset. Geol. Mag. dec. 2, vol. i. 

 pp. 255, 256. • 



The author describes the rounded hill-tops near Dunster, Porlock, 

 and Minehead, also the detrital deposits of clay and gravel on the 

 slopes of these hills. The general contour of the country and its drifts 

 he considers suggest the agency of ice. Near Ashley Lodge he dis- 

 covered a mass of sandstone distinctly glaciated. W. T. 



. The Submerged Forest, Holly Hazle, Sharpness. Proc. Cot- 



teswold Nat. Club, vol. vi. pp. 105-125. 



The author first gives an account of the submerged forests wliich 

 have been described at Cromer, Hull, and Porlock ; and he then refers 

 to sections recently opened up-in forming the new docks at Holly Hazle. 

 These exposed a bed of peat, of a maximum thickness of 14 feet, and 

 composed mainly of oak, alder, beech, and hazel. It is overlain by 

 about 8 feet of fine silt, and it rests upon a potter's clay, which again 

 overlies the Red Marl. The bottom of the peat is about the height of 

 mean low water-mark in the Severn. The author points out the phj'- 

 sical changes which are indicated by the submerged forest and the 

 deposits now associated with^t. H. 13. W. 



Mackintosh, 'D. On a New Section of Pre-Glacial White Clay 

 and Sand near Mold [Flintshire]. Geol. Mag. dec. 2, vol. 1. 

 pp. 67, 68. ' , 



The section is near Colomendey Hall. It showq gravel and clay, the 

 latter containing scratched and striated stones, overlying white clay and . 

 sand, which rests on Carboniferous Limestone. The deposits lie in 

 a basin about 800 yar.ds in d\^meter. The author alludes to the 

 opinion that suph white clays are- the residue of limestone, tht) calca- 

 reous matter of which has been dissolved ; and he refers to a boring 



