134 Proceedings of the Royal Irish Acadetny. 



.No. of Magnetic LOCALITY OF OCCURRENXE. OBSERVATIOTJS, 



Jomting. Bearing. 



286 67° 30' E. MaJahide Station Quarry. — 



370 64° 30' E. ,, Coast. — 



385 65° E. Donabate Coast. — 



386 67° 30' E. „ „ — 

 395 67= 30' E. ., „ — 

 532 68= 30' E. Eathgar Quarry. — 



Number of Directions observed, 6. 

 400' 30' -f 6 = 66° 45' E. mean value. True bearing, 45° 25' E. 



363 



74° 



E. 



MalaMde Sbore. 



372 



72° 30' 



E. 



5, )5 



424 



75° 30' 



E. 



Donabate Coast. 



260 



77° 



E. 



Sandvford. 



293 



77° 30' 



E. 



St. Dolough's Quarry. 



Number of Directions observed, 5. 

 376° 30' -f 5 = 75° 18' E. mean value. True bearing, 53° 58' E. 



288 



86° 



E. 



Malabide Station Quarry 



289 



84° 



E. 



,, ,, ,, 



841 



85° 



E. 



MalaMde Store. 



Number of Directions observed, 3. 

 256° ^ 3 = 85° E. mean value. True bearing, 63° 40' E. 



270 



90° 



W. 



Malabide QuaiTy. 



281 



92° 



W. 



Malabide Coast. 



283 



86° 



W. 



V )5 



292 



93° 



W. 



St. Dolough's Quarry. 



399 



87° 



W. 



Donabate Coast. 



397 



90° 30' 



W. 



>> >j 



408 



88° 



W. 



,, ,, 



505 



88° 



w. 



Palmerstown Quarry. 



608 



87° 30' 



w. 



,, ,, 



517 



91" 30' 



w. 



Lucan. 



547 



89° 



w. 



Feltrim Quarry. 



548 



92° 30' 



w. 



,, ,, 



498 



88° 



w. 



Eabeny Quarry. 



650 



92° 



w. 



Feltrim Quarry. 



Number of Directions observed, 14. 



1255' -f 14 = 89' 38' "W. mean value. True bearing, | gg, ^^g' e" 



