512 Notices of Memoirs — Bristol Naturalists' Society. 



the N.E,, owing to the remarkable clip of the strata, were protected 

 in a depression, probably beneath the sea. 



Mr. Morton next gives four sections tending to prove that the 

 Coal Measures lie fully developed beneath the Trias. 



1. Sections at Sutton St. Helens. Here the lowest strata visible 

 are the Upper Coal Measures, dipping at various angles from 6° to 

 12°; and underlying the Permian, which is supposed to be about 

 350 feet thick. About five miles N.E. of this locality, at Edge 

 Green, near Wigan, there has been considerable denudation of the 

 Coal Measures ; the " Main Delph Coal " being reached at a depth 

 of only 475 feet. 



2. Section at Halsnead. The section represents a line across the 

 country south of Huyton Quarry. But the succession of the strata 

 is not so distinct as at that place, on account of the land being every- 

 where covered with drift. The Upper Coal Measures occur here, and 

 seem to be 1200 feet thick. They are succeeded by the Lower 

 Bunter Sandstone, but there is sufficient unproved ground for the 

 Permian to crop out between it and the Upper Coal Measures. 



3. Section at Thatt's Heath. Here the Middle Coal Measures are 

 thrown up by a great fault. This dislocation cannot have destroyed 

 any of the strata, being a simple fracture, leaving the order of 

 succession on both sides of the fault unchanged. And since at 

 Sutton, within two miles, the Upper Coal Measures and the Permian 

 are both fuller exposed, these formations, along with the higher 

 Coal-seams above the Eavenshead Beds, and the Permian, have all 

 been denuded, along with the Trias, from ofi" the Middle or pro- 

 ductive Coal Measures exhibited in the section. 



4. Section at Denna, Little Neston. This intersects the boundary 

 fault between the Bunter Pebble Beds and the Middle Coal 

 Measures. The Upper Coal Measures and probably the Permian 

 have been denuded on the S.W. of the fault, but underlie on the 

 N.E. At Shotwick, about four miles S E. from Neston, a boring 

 made for Coal proved the Lower Bunter to be 510 feet, and to rest 

 upon the Coal Measures. 



From these four sections Mr. Morton infers that there are Coal- 

 fields beneath the Trias, and concludes with a few remarks as to the 

 practicability of working them. — B.B.W. 



n. — Proceedings of the Bristol Naturalists' Society, vol. vii., 

 part 2, June to December, 1872. — In this little work Mr. E, B. 

 Tawney, F.G.S., records his discovery of Zoophyciis scoparius 

 (Tholliere), a plume-shaped Alga, in the Inferior Oolite of Dundry. 

 This species is, so far as he knows, new to English geology, but it 

 is extremely characteristic of the Inferior Ooolite in the Alps 

 of the Canton de Vaud, being sometimes almost the only fossil to 

 be found in those beds. It is also characteristic of the Inferior 

 Oolite (Bajocien) in the South of France. 



Mr. Tawney also contributes some notes on the Upper Greensand 

 Fossils in the Bristol Museum. , 



