50 
CLAY lEON-STONES, 
Shelf VIII. 
Series from Pontypool: — 
461. “ Black Pin Vein.” 
462. “ Rock Vein Pin,” 
463. “Meadow Vein Pin,” or 
“ Pwllaca.” 
464. “ Red Vein Pin.” 
Shelf IX. 
Pontypool —continued :— 
465. “ Droidic Ball.” 
466. “Rock Pin.” 
467. Spotted Vein,” pin. 
468. “ Spotted Vein,” ball. 
Nos. 461 to 468 presented by D. H. 
AVilliams. 
Wall-case 51. 
Shelf I. 
South Wales.— North-eastern 
Outcrop. 
Series from Coalbrook Vale ;— 
469. ,, o f Top course. 
470. J Middle. 
471. L Bottom course. 
472 & 473. “Black band.” 
474 to 477. “ Black Pins.” 
Shelf II. 
Coalbrook Vale —continued : — 
478. “ Grey Vein.” 
479. “ Three-quarter Balls.” 
480. “ Three-quarter Vein.” 
481 & 482. “ Black Band.” 
Nant-y-glo. 
483 & 484. “ Spotted Pin.” 
[ 485 & 486. “ Little Pins.” 
Nant-y-glo. 
487. “ Red Vein ” (bottom mea¬ 
sure). 
488. “Big Vein.” 
Nant-y-glo. 
Shelf III. 
South Wales. — Northern Outcrop. 
I Series from Dowlais^ Cyfartha. 
I and Penydarren :—^ 
489. “Top Vein” (upper mea¬ 
sures). 
Penydarren, near Merthyr Tydjih 
Glamorganshire. 
Presented by D. H. Williams. 
490. “ Black Band ” of the 
Gwrid or Gwr-hyd mine. 
491. “ Gwrid Mine.” 
Dowlais. 
492. “ Soa^) Vein” (top course)^ 
' Dou'lais. 
493. “ Soap Vein” (middle pin). 
Penydarren. 
494 & 494a. Nodules in the Soap 
Vein. 
\ Cyfartha, Merthyr Tydfil. 
Shelf IV. 
{ Dowlais, Cyfartha, and Peny- 
! darren —continued :— 
j 495. “Old Soap Vein.” 
Cyfartha. 
Nos. 493 to 49.5 presented by D. H. 
Williams. 
496. “ Soap Vein ” (bottom 
course). 
Dowlais. 
497. “Black Pin.” 
Penydarren, Merthyr Tydfil, 
498. “Black Vein.” 
Cyfartha. 
499. “ Pin above the Balls.” 
Cyfartha. 
* See for detailed Section the “ Iron Ores of Great Britain,” p. 200. 
