BRITISH ISLES. 43 



human and other remains from the *' head," and to a hrcccia, now in 

 process of formation, like that of the Trias. W. T. 



Woodward, H. B. Additional Eemarks upon Inversions of Carboni- 

 ferous Strata in Somersetshire. Geol. Mag. dec. ii. vol. iii. pp. 455- 

 458. 

 lleplies to Mr. McMurtrie (see p. 24), describing some of the anti- 

 clinals and large faults, which account best for the inverted masses of 

 Limestone in Somersetshire, referred to in Oeol. Mag. 1871. W. H. D. 



. On the succession of strata in England and Wales, studied 



in connexion with geological time. (Norwich Geol. Soc.) Eastern 

 Daily Press, Feb. 7. 



Notes the breaks between the Pre-Cambrian and Cambrian, between 

 the Cambrian and Silurian (of Sedgwick), between the Chalk and Ter- 

 tiaries, and that between the Eocene and Pliocene, which is partly 

 bridged over by the Miocene clays and lignites of Bovey Tracoy ; and 

 observes that with these exceptions a complete sequence might locally 

 be traced. Endeavours to show, by taking the mean calculations, that 

 the total thickness of our strata is no more than 54,000 feet. Discusses 

 the possible rate of deposition according to the limits of time assigned 

 by Sir W. Thomson, and observes that we could not expect a succession 

 of life-forms in a series of deposits which indicate continual changes of 

 condition. H. B. W. 



. A Sketch of the Geology of Surrey. In ' The London Saturday 



Half- Holiday Guide.' Ed. 8, pp. 44-47. 



Describes the Hastings Beds, Weald Clay, L. Greensand, Gault, U. 

 Greensand, Chalk, Lower London Tertiaries, London Clay, Bagshot 

 Beds, and Superficial Deposits, indicating localities, fossils, conditions of 

 de])osit, and relation of geological structure to scenery. W. H. D. 



Worth, R. N. On Certain AUuvial Deposits associated with tho 



Plymouth Limestone. Quart. Journ. Geol. Soc. vol. xxxii. pp. 



236-239. 



The deposits occur in '* pockets " in the limestone ; usually there 



are pebbles near the top and clay below, which again rests on sand. 



Tho)^ are the remains of widespread deposits, which seem to have been 



formed in quiet water, and from decomposed granite. W. T. 



. The Geology of Plymouth. Trans. Plymouth Inst. vol. v. 



part 3, pp. 450-477. 

 Devonian rocks described in detail. Secondary rocks, Drift, and 

 Cavern-deposits noticed. 



Wright, Dr. T. Address to the Geological Section. Ilej}. Brit. 

 Assoc, for 1875, Sections, pp. 47-62. 



(nves a resumS of the Geology and Pahncontology of the country 

 round Bristol, divided into six districts : — Tortworth, Mendips, Kad- 

 stock, Bristol, Dundry, and Bridgwater. W. T. 



. Note on the Reptilian Remains from the Dolomitic Conglome- 

 rate on Durdham Down. Rep. Brit. Assoc, for 1875, Sections, p. 85 



