Vol. 65.] PETROGRAPHY OP THE NEW RED SANDSTONE. 



23"! 



In the case of the calcium-carbonate of these rocks, much of it 

 presumably resulted from chemical precipitation ; but, at the same 

 time, it appears that a fair proportion must have been detrital iu 

 character. 



iv. mlneralogical characteristics op the flner material 

 and Distribution of Mineral Species. 



The following is a list of localities from which samples have been 

 collected for petrological study : — 



Loiver Breccias and Lower Sandstones. 



1. Berry Head, south of Brixham. 



Sandstone. 



2. Torre. Sandstone. 



3. The Ness, west of Teignmouth. 



Breccia. 



4. The Clerk Rock, east of Teign- 



mouth. Breccia. 



5. Heavitree, near Exeter. Breccia 



and sandstone. 



6. Yeoford Junction, north of. 



Breccia. 



7. Hollis Head, near Killerton. 



Breccia and sandstone. 



8. East of Langley, north of Wivelis- 



combe. Breccia. 



9. Topsham (Redcow). Sandstone. 



10. Topsham (railway-bridge). Sand- 



stone. 



11. Sandygate. Sandstone. 



12. Honiton Clyst. Sandstone. 



13. Monkerton, near Pinhoe. Sand- 



stone. 



14. Gipsy Hill, near Pinhoe. Sand. 



15. Broad Clyst Heath. Sand. 



16. Digby's Asylum. Sandstone. 



17. Brampford Speke. Sandstone. 



18. East Town, east of Totland. 



Sand. 



19. Wiveliscombe, south of Castle 



Hill. Marly sandstone. 



20. Stogumber. *Sand. 



21. Elworthy, outlier near. Sand. 



Loiver Marls. 



22. St. Mary's Clyst. Sandstone. 



23. Hulham, near Exmouth. Sand- 



stone. 



24. Raddon Quarrv, near Thoverton. 



Marl. 



25. Uffculm, south of. Marl and 



sandstone. 



26. Wiveliscombe, east of. Sandstone. 



Pebble-Bed. 



27. Budleigh Salterton, coast-section, 



samples taken every 10 feet from 

 base to summit. Sand. 



28. Woodbury Castle, 20 feet above 



the base. Sand. 



29. Newton Poppleford. Sand. 



30. Fair Mile, near Talaton. Sand. 



31. Uffculm, south of. Sand. 



32. Burlescombe, Church Quarry. 



Sand. 



33. Milverton Station, quarry at. 



Calcareous sandstone. 



34. Fitzhead, east of Wiveliscombe. 



Calcareous sandstone. 



Upper Sandstones and Marls. 



35. Ladram Bay, east of Budleigh 



Salterton, coast-section. Sand- 

 stone. 



36. Lyme Re°;is, deep boring at, depth 



of 487 feet. Marl. 



37. Lyme Reads, deep boring at, depth 



of 1000 feet. Marl. 



38. Lvme Regis, deep boring at, depth 



of 1200 feet. Marl. 



39. Otterton. Marly sandstone. 



40. Crowcombe, west of. Sandstone. 



41. Bishop's Lydeard, quarry near. 



Sandstone. 



42. North Petherton, Bridgwater area. 



Sand. 



43. Chads Hill, south side of Cannin- 



ton inlier. Sandstone. 



44. Plainsfield, east of, east of the 



Quantocks. Sand. 



45. Canninton Park Farm. Sand. 



46. Nynehead, road and quarry near. 



Sandstone. 



47. Wembdon, near Bridgwater. 



Sandstone. 



48. Preston Bowyer. Sandstone. 



Tipper Keuper Sandstone. 



49. Stoke St. Gregory. Sandstone. 



The following table (pp. 238-39), in which the numbers refer to 

 the localities mentioned above, presents the distribution of the more 

 important and abundant minerals, exclusive of quartz, which enter 

 into the composition of the New Red sediments. 



