O'Eeilly — On Lines of Jointing of Bray Head, ^c. 
No. Locality and Remarks. ^l^^^rNolth:' 
644 A few yards S.E. of 543 ; beds here, . . 59 27 E. 
545 About 200 yards on Bray side of Lord 
Meatb's gate-house on path ; first outcrop 
of quartzite on path ; shows no trace of 
bedding, but seams of white quartz. — 
120 yards S.E. of quartzite outcrop ; quartz 
veins in beds of greenstone and slate-rock, 69 33 "W". S."W. at 70°. 
546 Immediately S.E. of gate-house ; beds of 
purple slate-rocks, 66 27 E. N.W. at 50°. 
547 80 to 90 yards S.E. of gate-house ; beds of 
purple slate-rocks, . . . . . 56 27 E. 
648 Gulley of old wooden bridge ; beds here, . 56 27 E. 
649 Gully of old wooden bridge ; apparent direc- 
tion of gully (about) . . . . 58 27 E. 
Do. do. do. do., . . 51 67 E. 
650 S.E. of gully ; beds highly pitched here, . 73 27 E. N. 72°. 
551 160 yards S.E. of gully, on path ; beds highly 
pitched here, 89 33 "W. N. 69°. 
552 Further S.E. ; set of purple and grey beds, , 69 67 E. N. 50°. 
653 200 perches S.S.E. of gate-house on path 
("Brandy Hole"); great outcrop of 
quartzite, through which tunnel cut; 
beds about 100 yards on S. side of tunnel 
entrance, 56 27 E. N."W. 60°. 
664 Commencement of path round Head ; fold of 
greenstone rock, 50 27 E. 
655 Quarry on path (537) ; rocks to S. of (beyond 
gulley), 73 33 W. N. 52°. 
656 First outcrop of quartzite on path (545) ; joint 
parallel to path, 43 33 W. S.W. 60°. 
657 80 yards S. of gate-house, at about 70 feet 
above path on hillside ; face of bed here, . 63 33 W. X.E. 65°. 
668 "Brandy Hole" tunnel (553); beds imme- 
diately N. of, on path, . . . . 41 27 E. N.W. 50°. 
659 90 perches on N. side of tunnel ; beds of coarse 
feldspathic grit with purple clay coating, 
joint cutting them, 15 27 E. Vertical. 
660 150 yards of "Brandy Hole" tunnel; 
massive beds with purple seams, . . 78 3 "W". N. 57". 
561 Vicinity of do. ; vertical jointing here fre- 
quent and close, 31 33 W. 
Do. do. do. do., . . 31 33 "W. 
562 " Brandy Hole" quartzite ; frequent jointing 
in, 38 33 W. 
Do. do. do. do., . . 34 33 W. 
563 The mass of the quartzite strikes, . . 47 27 E. N.W. 50°. 
664 72 perches N. of tunnel in Head ; gulley of 
old wooden bridge, apparent direction of, . 86 33 "W. 
E. I. A. PROC, SEE. III., VOL, I. S 
