8 - GEOLOGY. 



Clough, C. T The Section at the High Force, Teeadale. Quart. 

 Journ. Geol. Soc. vol. xxxii. pp. 466-471 ; 2 woodcuts. 



This section has been supposed to show but one bed of basalt. An 

 underlying bed, described by Prof. Phillips as subprismatic plate (or 

 shale), is shown by the author to be a fine-grained basalt. Below the 

 High Eorce both beds of basalt come together. The lower bed is an 

 " underflow " from the Great Whin Sill, which is thus proved to be 

 intrusive. W. T. 



Clutterbuck, Rev. J. C. The Geology and Water-Supply of the 

 neighbourhood of Watford. Trans. Watford Nat. Hist. Soc. vol. i. 

 pt. V. pp. 125-131. Discussion, pp. xxxvi, xxxvii (1877). 

 General sketch of the geology (Chalk, Lower London Tertiaries, 

 London Clay, and Gravel) ; the water-passages in the Chalk, the effects 

 of rainfall, flooding, and drought, and the fouling of well-water by per- 

 colation from turbid rivers. W. H. D. 



Collins, J. H. On Pawton Iron Mine. Rqy. Miners' Assoc. Cornwall 



for 1875, pp. 26-30 ; woodcut. 

 Red ha3matite and a little spathic iron ore occur in a true fissure- 

 lode in the killas, bearing N . 18° W. The author supposes that the 

 contents of the vein may have been derived from the enclosing rocks. 



C. L. F. 



Coutts, James. On the Post-tertiary Clay-beds at Houston. Proc. 



Nat. Hist. Soc. Glasg. vol. ii. part 2, pp. 336-342. 

 Describes the glacial beds of the Clyde district and the mode of their 

 formation, giving a list of bQ species of Mollusca, &c. W. H. D. 



Craig, Robert. On a bed of Dolerite that crosses Renfrewshire to the 



East of Paisley. Coll. Guard, vol. xxxi. p. 1 02. 

 Yery fuU abstract of paper read to Geol. Soc. Glasgow. 



Crofton, Rev. Addison. Drift, Peat, &c. of Heysham, Morecambe 

 Pay. Trans. Mancli. Geol. Soc. vol. xiv. pt. vii. pp. 152-154. 



Cliffs of red clay, with stones marked with ice -scratches and derived 

 from the Lake District, are described. Shells of My a truncata and M. 

 arenaria occur in the clay, resting on which, in the low ground, is a 

 bed of peat with antlers of red deer lying on grey clay ; the peat is being 

 rapidly denuded. C. E. R. 



Crosskey, Rev. H. W. Third Report of the Committee appointed 

 for the purpose of recording the positions, height above sea, litho- 

 logical characters, size, and origin of the more important of the 

 Erratic Blocks of England and Wales, reporting other matters of 

 interest connected with the same, and taking measures for their 

 preservation. lle;p. Brit. Assoc, for 1875, pp. 82-91. 



Information is given regarding Boulders in Devonshire (Waddeton 



