1826.J Excursion to the Counties of Galway and Marjo, 275 



transmuted into calcareous spar, from Oughterard, 



Cunnamara. 

 19 — ^20. Granite from the junction with the limestone, near 



Oughterard. 

 21 — 22. Mica-slate, from tlie mountains between Oughterard 



and Ballinahinch. 

 23 — 24. Granite, from the same place. 

 25 — 28. Fine granular limestone (marble), of pearl-grey colour, 



mixed with rose-red, from the rivulet near the 



Twelve Pins. 

 29 — 30. Precious serpentine, of yellowish-green colour, cloudy, 



mixed with pearl-grey calcareous spar, from Balli- 

 nahinch. 

 31 — 32. Ditto, of dark leek-green colour, undulatingly striped, 



with some white calcareous spar, from the same 



place. 

 33 — 34. Ditto, of leek-green colour, mixed with brown and 



grey, from ditto. 

 35 — 36. Ditto, of sulphur-yellow colour, mixed with grey and 



white, from ditto. 

 37 — 40. Four other beautiful varieties, with cloudy dehneations, 



from ditto. 

 41 — 42. Tourmahne, of pitch-black colour, imbedded in granite, 



from Penacuola. 

 43 — 44. Chalcedony, passing into flint of yellowish-grey colour, 



from the same place. 

 45 — 46. Black limestone, from Ireland quarry. 

 47 — 48. Violet-blue fluor, in black limestone, from ditto. 

 49 — 50. Black limestone, with gryphites, from ditto. 



County of Mayo. 



51. Glass white double refracting spar, transparent, from Cong. 



52. Ditto, yellowish-white, from the same place. 



53 — 54. Yellowish-white and greyish-white stalactite, from the 



cave, near Cong. 

 55—56. Greyish-black limestone, with traversing veins of calca- 

 reous spar, from BalHnrobe. 

 57 — 58. Smoke-grey clay-slate, from the lead mines, near 



Sheli'ry. 

 59. Chlorite-slate, of leek-green colour, with much quartz, from 



the same place. 

 60 — 64. Massive galena, of lead-grey colour, of different texture, 



from the same place. 

 65. Common galena, crystallized in cubes, with clay-slate, from 



the same place. -* 

 66 — 68. Copper pyrites of brass-yellow colour, accompanying 



massive galena, with clay-slate, from the same place. 

 t2 



