26 GEOLOGY. 



Mello, Rev. J. M., and T. Heath. On the Exploration of Creswell 



Crags Caves. Trans. Manch. Geol. Soc. vol. xiv. pp. 103-111. 

 Notices the Pin Hole and Robin-Hood caves. 



Milne-Home, D. Notice of High-water marks on the Banks of the 



lliver Tweed and some of its Tributaries ; and also of Drift 



deposits in the Valley of the Tweed. Trans. K. Soc. Edin. 



vol. xxvii. pt. 4, pp. 513-562, pis. 35-38 ; woodcuts. 



1. Eiver Tweed and its Banks ; 2. Districts adjoining the Valley of 



the Tweed ; 3. Theoretical Views ; 4. Views of other Geologists. 



R. E., Jun. 



. On the Parallel Roads of Lochaber. Trans. R. Soc. Edin. 



vol. xxvii. pt. 4, pp. 595-649, pis. 41-43 ; woodcuts (one plate is 

 a general plan of Lochaber &c.) ; Proc. R. Soc. Edinh. vol. ix. 

 pp. 159, 160. 

 Reviews the papers on the subject since 1817, and concludes that the 

 valleys in which these roads occur have been occupied by lakes which 

 subsided from one level to another, as the blockages of the lakes, formed 

 of detritus, were worn down by the action of rivers. Before the for- 

 mation of the lakes a submergence of at least 3000 feet took place, 

 when currents with floating ice spread detrital matter over what was 

 then the sea-bottom, the ice smoothing and scratching the rocks over 

 which it passed. The direction of this current was from the W.N.W. 



R. E., Jun. 



Moore, C. [Geological characteristics of Vallis, Somerset.] Proc. 

 Somerset Nat. Hist. Soc. vol. xxi. (New Series, vol. i.) pp. 31-39. 



Refers to the upheaval of the Mendip Hills, which he considers to 

 have been sudden, and alludes to his discovery of igneous rock near 

 Stoke Lane. Notices the occurrence, at Holwell and Charterhouse, of 

 veins in the Carboniferous Limestone composed of Rhaetic and Liassic 

 material. Thinks that the minerals in the veins, whether iron- or 

 lead-ores, are as young as these fossiliferous deposits. H. B. W. 



On the Age of the Durdham Down Deposit, yielding Theco- 



dontosavrus^ &c. Rep. Brit. Assoc, for 1875, Sections, pp. 77, 78. 

 The deposits occur in hollows in Carboniferous Limestone, believed to 

 be of Rhastic age, and to have remained open during part of the Lias. 



The Geology of Bath. ' The Original Bath Guide ' [New Ed.], 



pp. 120-123. 



Morris, Prof. John. The Physical Structure of the London Basin, 

 considered in its Relation to the Geology of the Neighbourhood of 

 Watford. Trans. Watford Nat. Hist. Soc. vol. i. pt. iv. pp. 89-107 ; 

 5 woodcuts (sections). 



The characters, cliniatal conditions, fossils, ta. of the Thanet Beds, 



