118 Proreedings of the Royal Irish Academy. 



Iffalaliide Quarry, near Station — eontvnued. 



288 Cross joint, dipping nortli at about 65°, 



289 ,, ,, ,, (6 yards from last), 



290 Vertical joint on east side of railway, well defined, 



291 „ „ west „ „ „ 



84° 



E. 

 E. 



St. Doug'log'li's Limestone Quarry : — 



292 On south side, jointing close and frequent, ... 87° E. 



293 „ „ well marked and vertical, . . 77°-78° E. 



294 ,, joio-t vertical, but irregular, broad, and 



filled with calcspar, 40°-41° E. 



295 „ „ ., „ „ „ „ „ . 60°-61° E. 



296 Sparry joint ia middle of quarry, . . . - . 47° E. 



297 



298 

 299 

 300 

 301 

 302 

 303 



304 

 305 



306 



307 

 308 

 309 



310 

 311 



312 



313 



314 

 315 



316 



EEalahide Strand : — 



About 230 yards east of Eobs "Wall, MarteUo Tower, in 

 limestone beds, dippiag north about 20^, four calcspar 

 joints. 



Under road 



On flat boss of horizontal beds a set of joints, more or 

 less sparry, 



Cross jointing without spar. 



Set of sparry joints, occurring at close intervals under 

 sustaining wall of road_ 



Under old castle, and about 80 yards west of it, well' 

 marked and open joint. 



Under old castle, . 



Set of big joints, with Dolomite lining 1^^ in. thick at 

 close intervals, and running towards castle. 



Detached block under castle, apparently part of a joint. 



Great joint, lined with better spar and calcspar 3 in 

 thick, with companion joint 6 ft. to west, causing a 

 gap in the strand, evidently a principal one ; 40 yards 

 east of old castle, ....... 



Jointing crossing these beds, and running towards old 

 castle ; broken and without spar, . . . 



Another joint, a little to the east of this, 



Great open joint, about 100 yards east of castle, . 



Set of "gashes," lined with calcspar, and forming a 

 direction, ........ 



Direction of " gashes " about, 



38° 



E. 



42° 30' 



E. 



42° 



E. 



39° 



E. 



31° 



E. 



32° 



E. 



27°-28° 



E. 



6° 



W. 



31°-32° 



3r-32° 



E. 



40°-41° 



E. 



17° 



E. 



20°-21° 



E. 



14°-lo° 



E. 



14° 



E. 



78° 



W 



70°_71° 



W 



41°-42° 



E 



13°-14° 



E 



50°-52° 



E. 



