On some Well-sections in Middlesex. 223 



pebbles, and being probably the representative of the Up ware 

 deposit, and presumably, therefore, also of the Lincolnshire Car- 

 stone. 



4. " The Geology of Cape-Breton Island, Nova Scotia." By 

 Edwin Gilpin, Esq., Jun., A.M., F.R.S.C., Inspector H.M's. Mines. 



After referring to previously published descriptions of Cape Breton 

 geology, the author stated that the various formations found in the 

 island had been thus classified by the officers of the Geological 

 Survey : — 



Pre-Cambrian (Laurentian) 



including f The Felsite series. 



\ The Crystalline Limestone series. 

 Lower Silurian. 

 Devonian. 

 Carboniferous, including 



C Lower Coal-formation. 



{Gypsiferous series. 

 Limestones, &c. 

 Millstone-Grit. 

 ^ Middle Coal-formation. 



He then proceeded to give an account of each system and its sub- 

 divisions in order, commencing with the most ancient and adding a 

 few detailed sections of the rocks belonging to some of the principal 

 series. He described the distribution and relations of the several 

 divisions. 



The paper concluded with a few notes on the superficial geology 

 of the island. There is a general absence of moraines and of the 

 fossiliferous Post-Pliocene marine clays of the Lower St. Lawrence. 

 The older beds are generally exposed, but deeper soils and deposits 

 with erratic boulders are found overlying the Carboniferous beds. 

 Marks of recent ice-action are found on the shores of some of the 

 lakes, and are due to the ice being driven by the wind. 



5. "On the Decapod Crustaceans of the Oxford Clay." By 

 James Carter, Esq., F.G.S., &c. 



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 Geological 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 those counties. 



