TRIASSIC STRATA OF LANCASHIRE. 109 



Westmoreland, Cumberland, and Dumfries, as well as the 

 north-western corner of Yorkshire. I took sections where 

 I was fortunate enough to obtain them ; but I made no 

 attempt to lay the strata down continuously on a map, my 

 materials being far from sufficient for such a purpose. 



By looking at a geological map of the county of Lan- 

 caster, the observer will find a great gap between the Per- 

 mian beds of Grimshaw Delph, Bradley Brook, and Skillaw 

 Clough, to the north-west of Wigan, and the sections 

 described by me at Rougham Point near Cartmel, and 

 Stank near Ulverston. The lower Coal-Measures from 

 Harrock Hill can be triaced pretty well towards Chorley, 

 and thence to near Withnell ; and then the millstone grit 

 runs to Hoghton, through Salmesbury and Alston, and 

 across the country, not very well seen, to Griesdale, Scor- 

 ton, Cleveley, EUel, Ashton, near Abbey Lighthouse on the 

 Lune, over the mouth of that river to Bobshaw point, 

 and on to Hey sham. The country forming the western 

 boundary of the above line is a low district, a good deal 

 covered up with drift, and aflPording few natural sections 

 to show clearly the relation of the carboniferous to the 

 Permian strata. The district probably may afford some 

 sections if carefully investigated ; but up to this time it 

 has been quietly dismissed by colouring it red for Trias. 



In this communication I intend to give a little more in- 

 formation, which I have lately obtained in a line from 

 Hoghton Tower to Fleetwood, at Boach Bridge, Salmes- 

 bury, and Alston, also at Cockersand Abbey, south of the 

 mouth of the Lune, and Bobshaw Point and Heysham to 

 the north of the same river ; having first made a few re- 

 marks on some singular red sandstones, hitherto classed as 

 Trias, in the neighbourhood of Whiston and Bainford, near 

 St. Helenas, and laid down as such on the maps of the 

 Geological Survey, as well as a soft red sandstone, classed 

 as Lower Permian by Mr. Hull, near Manchester. 



