Vtclnity ofBuhlin. 27^ 



" the side of the great road from Newry to Belfast. Its length, so 

 " far as hitherto observed, is half a mile. 



" The rock, which is covered with mould to the depth of about 

 " a foot, consists of a grey granite. The vein is about two feet and 

 " a half, or two and a quarter in width; at the places of contact both 

 " the granite and pitchstone are disintegrated, the latter being almost 

 " as soft as clay, but becoming gradually harder, as it approaches the 

 " center of the vein. The structure of the vein is foliated, the 

 " folia being perpendicular to the horizon, and also to the walls ; 

 " and besides these, there are seams, that run longitudinally, parallel 

 " to the horizon, and nearly perpendicular to the folia." 



Although this substance presents some peculiarity, in being divi- 

 sible into rhomboidal fragments, it approaches in this respect tO' 

 Xhe pitchstone of Arran (in lamellar concretions) which holds as it 

 were a middle place between it, and that possessing the more usual 

 characters. 



Mr. Jameson has described a vein of pitchstone " running in 

 granite," observed by himself in Arran ;* and he states that 

 " lamellar distinct concretions have been hitherto observed in the 

 " pitchstone of that island only."'f 



8. Th.Q granular sulphate of barytes^ hitherto very rare, has been, 

 found, as the Rev. Mr. Hincks of Cork informs me, by Dr. Wood 

 of that city, on the sea shore, near Clonakilty^ from whence a 

 specimen in the Museum of Dublin College, (No. QS^^ has probably 

 been obtained : it is accompanied by iron pyrites. 



9. Wavellite. This remarkable mineral has recently been found 

 in the county of Cork, at Spr'inghill near Tracton-abbey^ about ten 

 miles south-eastward from the city. The Rev. Mr. Hincks of the 



• Min. of Scottish Isles, 4to. vol. L p. 81. + Jamcson'sMincralogy, vol. T. p. 26U 



