Geological Society of London. 379 



the Kimmeridge Clay. Seven species are identified as foreign forms, 

 and seven are new to science. They are distributed as follows : — 



Eryon 1 species. 



Eryma 5 or 6 ,, 



Glyphea 2 ,, 



Magila 2 or 3 „ 



Mecochims 2 „ 



Ooniochorus 1 ,, 



Undetermined 3 „ 



Nearly all the forms belong to the type of the Macrura, the Bra- 

 chyura being doubtfully, if at all, represented. 



6. " Some Well-sections in Middlesex." By W. Whitaker, Esq., 

 B.A. Lond., F.G.S. 



Accounts of many well-sections and borings having been received 

 since the publication of vol. iv. of the Geol. Survey Memoirs, the 

 author now gave more or less detailed descriptions of fifty-six of 

 these, all in the Metropolitan county, and all either unfinished or, 

 in a few cases, with further information as to published sections. 

 The depths range from 59 to 700 feet, more than half being 300 feet 

 or more deep. Nearly all pass through the Tertiary beds into the 

 Chalk, and most have been carried some way into the latter. Papers 

 descriptive of like sections in Essex, Herts, and Surrey have been 

 sent to Societies in these counties. 



7. " On some Cupriferous Shales in the Province of Houpeh, 

 China." By H. M. Becher, Esq., F.G.S. 



This communication contained some geological observations made 

 during a visit to a locality on the Yangtse river, near I-chang, about 

 1000 miles from the sea, for the purpose of examining a spot whence 

 copper-ore (impure oxide with some carbonate and sulphide) had 

 been procured. 



The principal formations in the neighbourhood of I-chang were 

 said to be Palaeozoic (probably Carboniferous) limestones of great 

 thickness, overlain by brecciated calcareous conglomerate and reddish 

 sandstones, which form low hills in the immediate vicinity of the 

 city. About fifty miles further west the limestones pass under a 

 great shale- series with beds of coal, the relations of which to the 

 sandstones are not clearly ascertained. 



The copper-ore examined by the writer came from the shales, 

 which contained films and specks of malachite and chrysocolla, and 

 in places a siliceous band containing cuprite, besides the oxydized 

 minerals, was interstratified in the beds. Occasionally larger masses 

 of pure copper-ore are found imbedded in the strata. The ground 

 had not been sufficiently explored for the value of the deposits to 

 be ascertained. 



8. " The Cascade Anthracitic Coal-fields of the Eocky Mountains, 

 Canada." By W. Hamilton Merritt, Esq., F.G.S. 



The coal-field named occurs in the most eastern valley of the 

 Pocky Mountains, that of the Bow river, and, like other coal-fields 

 of the country, consists of Cretaceous rocks, which lie in a synclinal 

 trough at an elevation of about 4800 feet above the sea. The under- 

 lying beds, of Lower Carboniferous or, possibly, Devonian age, rise 

 into ranges 3000 feet higher. 



