HOLL MALVEKSr HILLS. 77 



feet. 



2. Fine-grained red gramilite 95 



3. Pine-grained gneissic rocks and mica-schist, with a few 



narrow bands of hornblende-schist 565 



4. Hornblende-schist 15 



5. Mica-schist 15 



6. Unseen 85 



7. Trap-rock, partly brecciated 65 



8. Micaceons and hornblendic schists, not well exposed . . 260 



9. Pine-grained gneissic rocks with subordinate bands of 



hornblende-schist 330 



10. Diorite*, rich in hornblende, with small quartzo-fel- 



spathic veins 22 



11. Schist 3 



12. Diorite *, rich in hornblende, with many qnartzo-fel- 



spathic veins 25 



13. Schist and interval 12 



14. Pelspar and hornblende-rock, with quartzo-felspathic 



ve^ns 18 



15. Granite-vein 4 



16. Granitoid and gneissoid rocks with small granite-veins 



not well exposed 14 



17. Granite, probably a vein 21 



18. Not exposed 20 



19. Granite, probably a vein 45 



20. Granitoid rocks with small granite-veins 84 



21. Granitoid rocks not well exposed ; some beds contain 



epidote and chlorite 275 



22. Granite-vein ? 15 



23. Granitoid rocks, some bands containing epidote and 



chlorite 30 



24. Granite-vein ? 3 



25. Gneissoid and granitoid rocks 120 



26. Hornblendic gneiss and schist, with band of diorite 2 ft. 



thick, and some small granite-veins 36 



27. Granite 14 



28. Granitoid and gneissoid rocks, some bands containing 



epidote 75 



29. Granite 3 



30. Granitoid and gneissoid rocks 95 



Overlap of May Hill sandstone f. 



The granite-bands at the northern extremity of the hill are cer- 

 tainly some of them veins, if not all. They contain deep -red potash- 

 felspar, whereas the felspar of the other rocks is of light colours, 



* Hornblende and oligoclase, or andesine. 



t The laminated and bedded structure of some of the rocks of this hill, and 

 the east and west strike of the beds, are particularly noticed by Professor PhiUips 

 (op. cit. p. 29) ; nevertheless he does not appear to regard them in the light of 

 metamorphic rocks. Their schistose -structure is also noticed by Horner, op. 

 clt. § 40. p. 301. 



