300 



Proceedings of the Royal Irish Academy. 



Dalkey Q,uarries — continued. 



144. Upper Quarry, 6-7 yards west, great dyke of 



feldspathic porphyry, 



145. ,, ,, quartzite vein, .... 



146. ,, ,, 10 yards west of tMs joint, . 



147. Lower west Quarry, north-west point, joint, 



Carrickmines : — 



148. Joint in granite, 400 yards south of Station, in 



fiu'ze field, ....... 



The Dingle : — 



149. Jointiag of rock in, on east side, .... 



150. On west side, beside cottage, cross jointing, . 



Carrickmines : — 



151. Lode, north of smoke stack, .... 



Scalp : — 



In wood, on east side, jointing in slate rock, 

 Joiating in granite face, on east side, . 



Howth :— 



Balscaddan Bay, quartz vein in highly altered slate 

 rocks, 220 yards east of bathing- 

 place, 



,, ,, south side of detached rock called 



"The Stag," .... 



Puck's Eocks, well-marked joint in, . 



,, ,, apparent dyke in more easterly rock, 



,, ,, joint near this, .... 



,, ,, cross joiating, .... 



Kitestown, joiat in slate rock, in recess near private 

 house, ........ 



Dung Hill (second hill from west, on west side, op- 

 posite plantation), apparent jointing 

 on west side with quartz and Eiirite 

 jointiag, ...... 



,, >, on top of hni, in a mass of Euritic-look- 

 ing rock jointiag, .... 



Nm. 



152. 

 153. 



154. 



155. 



156. 

 157. 

 158. 

 159. 

 160. 



161. 



162. 



163. 

 164. 

 165. 



166. 



167. 

 168. 

 169. 



170. 

 171. 

 172. 

 173. 



,, ,, north-west extremity of, iron ore lode 

 well marked (corresponds with direc- 

 tion of top of Ireland's Eye and west 

 slope of Lambay Island), . 

 Eed Eock, near cottage, in entrance of a well-marked 

 depression, 250 yards west of Candle- 

 house, well marked face of joiatiag, 



,, ,, cross jointing, apparently, . 



,, ,, to the east of this, in dell, joiatiag, 



,, „ this boss of altered slate rock traversed 

 by well-marked vertical joints, . 



5) 5>_ )J )) )> J> _ 



At Carrickbrack House, at bend of road, joint, 

 ,, ,, cross jointing, 



,, ,, well-marked jointing here, 



dip to east, . 



44° "W. 

 18° "W. 

 21" W. 

 13° E. 



2°W. 



63°-64° "W. 



57° W. 



4°^. 

 4° W. 



29° E. 



84°-85° W. 



6°E. 

 46°-47° E. 



16° E. 



59° W. 



5°-6° W. 



14° E. 



4°W, 



4° W. 



40°-44° E. 



69°-70° "W. 



4°-5° E. 



37° E. 



12°-13° E. 



12° E. 

 74°-75° E. 

 8°-10° W. 



36°-37° E. 



