GEOLOGICAL SOCIETY OF DUBLIN. 131 



tied with large gray brecciated spots, and mixed with small gray spots, 

 fragments of Encrinites. Another variety at Clonony has a ground mot- 

 tled gray and white, with large brecciated brown spots. 



24. At Castletown, in Lower Ormond, Tipperary, is a marble mottled 

 red and white ; and one something similar occurs at Killarney, in which 

 the red and white occur in stripes. The latter in a cross section resem- 

 bles a fresh-cut slice of bacon. 



25. A gray limestone occurs near Borrisokane in Tipperary, which, 

 when struck, yields a metallic sound. A large piece gives out a deep 

 tone, and a small piece a high note ; a musical instrument might be 

 made out of this. A similar limestone occurs in many other places. 



26. Light gray limestone, with nodules and layers of chert, occurs 

 near Abbeyleix, Queen's County, and generally round the Coal series of 

 Castlecomer. Of this character are the upper beds of the limestone near 

 the passage into the coal shales almost everywhere they occur along 

 this junction. 



27. The black marble near Kilkenny has white marks of fossils, 

 Rhynconella, Cyathophyllum, &c. 



28. Another variety at Kilkenny is black, with a few large white 

 crescents. The workmen call this band the half-moon beds. The white 

 crescent is a section of a Productus filled inside with calcareous spar. 



29. To the west of the river Barrow, near Bagenalstown, in the 

 railway cutting, there is black shale, interstratified with beds of en- 

 crinital crystalline limestone. This type is common near the bottom of 

 the limestone. It is similar on the shore near Malahide ; but this type 

 must not be confounded with the passage above from the limestone 

 into the coal rocks (the Calp of Dublin), the black limestone of which 

 has neither crystal nor Encrinite. 



30. At Bagenalstown, in the street, the limestone quarried for 

 building is a dolomite nearly black. 



31. At Limerick there is very black marble, with a few pure white 

 spots. At Doneraile, a band exactly similar in appearance occurs. 

 Black marble is also got at Tralee. 



32. At Palliskenry, in Limerick, there is a reddish-brown marble, 

 with small white spots, remains of Encrinites, in calcareous spar. 



33. At Ballymacelligot, near Tralee, a hard, brittle, flinty slate is 

 found, of peculiar type. It is quarried for repairing the roads. 



34. At Churchtown, in Cork, the ground of the marble is brownish- 

 red, of various shades, mottled with large, white, brecciated spots, and 

 sprinkled with small ones. Here also is a gray marble, with large 

 white brecciated spots. 



35. At Mitchelstown is a marble with a black ground, and large 

 white brecciated spots. 



36. At Cork there is a marble having a red ground, with large white 

 spots. Here also is another, mottled gray and white. 



37. At Monkstown, near Cork, the marble has a brown ground, 

 mottled with gray and white spots. 



Dolomite, a variety of limestone, is only a condition of it induced 



