4,98 MB MILNE ON THE GEOLOGY OF ROXBURGHSHIRE. 



Lists of Specimens illustrative of the foregoing Memoir on the Geology of Roxburgh- 

 shire, and lodged in the Royal Society's Museum. 



1. Greywacke, fine-grained and blue, from vertical strata running east and west by compass. Edger- 



stone Burn foot. 



2. Greywacke, coarse and gritty, from a stratum about two feet thick, nearly vertical, running about east 



and west. From a quarry on turnpike road, two miles north-west of Galashiels. 



3. Greywacke, fine-grained and blue, from Do. Below Edgerstone North Lodge, in channel of Jed. 



4. Greywacke, coarse and brown. Edgerstone North Lodge, in channel of Jed. 



5. Greywacke, coarse and brown. From channel of Jed, where crossed by Hawick trap dyke, near Rink. 



6. Greywacke, curiously veined with iron, from channel of Jed, near Peel, in Southdean parish. 



7. Another specimen. 



8. Do. 



8 A. Greywacke, with organic forms, produced by structure. 



8 B. Pebble of old porphyry, from conglomerate of old red sandstone at Byreslees on the Ale Water. 



9. Old red sandstone with white spots, from right bank of Tweed opposite Dryburgh. 



10. Five specimens of red and white varieties of old red sandstone, from Denholm Hill, on the north 



side of Ruberslaw, where it is extensively quarried. The strata dip north at an angle of 8. 



11. Yellow sandstone, slaty, from Ancrum Park, overlaid by red sandstone strata. This yellow sand- 



stone is composed either of disintegrated yellow porphyry, or it is one of the red sandstone rocks 

 from which the colour has been discharged by heat. (See p. 473.) 



12. Old red sandstone, distant about 50 yards from porphyry rock, and apparently unaffected by it. 



13. Old red sandstone, with a stripe of greenish white. This white stripe is at the side of a crack or 



fissure in the rock. On the opposite side of the fissure, the red rock has a similar white stripe 

 of the same width. From Jed river, opposite to Fairneyhirst. 



13. Another specimen containing two stripes, the specimen having been between two fissures. One end 



was lately exposed to the heat of my kitchen fire, in order to ascertain the effect in changing the 

 colour. 



13 A. Specimens from the same locality, with the red colour nearly all discharged, from some change 

 apparently in the chemical state of the iron. 



14. Old red sandstone, with spherical white spots, from south bank of Tweed between Maxton Manse 



and school-house. 



15. Old red sandstone, lying nearly horizontal over vertical strata of greywacke. From river Jed, a 



little below the north Lodge of Edgerstone. The junction of the two formations is shewn by 

 the woodcut on page 437 of the foregoing paper. 



16. Calcareous sandstone, from right bank of Tweed opposite to Dryburgh. 



17. Yellow sandstone interstratified with red beds of Do., from right bank of Tweed below Holm House. 



18. White sandstone, from Doveston Hill, about a mile north-east of Edgerstone north lodge. A similar 



stone got and quarried at Kilburn. 



18 A. Conglomerate containing fragments of Cheviot porphyry, overlaid by the coal-measures at Mil- 

 lenden Burn. See page 449. 



r o 



18 B. Pebble of Cheviot porphyry, found in the conglomerate marked 18 A. 



18C. Calcareous sandstone, lying above 18 A. at Mellenden Burn, and alternating with marly shales. 



18 D. Conglomerate, from Sunlaws Quarry on Teviot, where the change apparently takes place from 



the old red sandstone formation to the coal-measures, p. 449. 

 18 E. Stratum of hardened clay, very common in lower parts of coal-measures, near the junction with 



old red formation. This specimen from Tweed above Floors Castle. 



