132 Proceedings of the Royal Irish Academy. 



LOCALITY OF OCCURRENCE. OBSERVATIONS. 



Kimmage Quarry. — 



No. of 





Magnetic 



Jointing. 





Bearing. 





559 



39° 



30' 



E. 



560 



40° 





E. 



561 



41° 



30' 



E. 



562 



42° 



30' 



E. 



Number of Directions observed, 25. 

 1025° -i- 25 = 41° mean value. True bearing, 19° 40' E. 



St. Dolougb's Quarry. 

 Donabate Coast. 

 Feltrim Quarry. 



Number of Directions observed, 4. 

 186° 30' -^ 4 = 46° 37' E. mean value. True bearing, 25° 17' E. 



296 



47° 



E. 



402 



45° 30' 



E. 



544 



47° 30' 



E. 



557 



46° 30' 



E. 



316 



51° 



E. 



Malahide Coast. 



318 



48° 30' 



E. 



5> >) 



337 



53° 30' 



E. 



>> )> 



348 



52° 30' 



E. 



»> )) 



389 



54° 30' 



E. 



Donabate Coast. 



421 



53° 30' 



E. 





473 



50° 



E. 





489 



53° 30' 



E. 



Gollarstown Bri( 



490 



52° 30' 



E. 



)j r 



513 



51° 30' 



E. 



Palmerstown. 



515 51° 30' E. „ — 



Number of Directions observed, 1 1 . 

 572° 30 -Ml = 52° -02' mean value. True bearing, 30° 42' E. 



303 27° 30' E. Malabide Coast. — 



334 



27° 30' 



E. 





358 



27° 30' 



E. 





364 



26° 30' 



E. 



>) >> 



376 



29° 30' 



E. 



,, ,, 



377 



29° 30' 



E. 



)) ;; 



390 



26° 30' 



E. 



Donabate Coast. 



407 



29° 30' 



E. 



)> ,, 



446 



27° 



E. 



Skerries Coast. 



454 



27° 30' 



E. 



,, ,, 



466 



28° 30' 



E. 





467 



26° 30' 



E. 





504 



26° 30' 



E. 



Palmerstown. 



Number of Directions observed, 13. 

 359° 30' -^ 13 = 27° 39' E. mean value. True bearing, 6° 19' E. 



