CELLULAR LODES. 
117 
450. Slickenside, in Ore of 
Cobalt and Nickel, the scores and 
stride well shown. 
Dobschau, Hungary. 
451. Slickenside Lead Ore. 
Tamar Silver Lead Mines, Devon~ 
shire. 
Presented by P. N. Johnson, P.R.S. 
452. Slickenside, in Iron 
Pyrites. 
Ballymurtagh Mine (^N. Lode), 
Wicklow, Ireland. 
453. Slickenside, from a Cop¬ 
per Lode. 
Wheal Friendship, Tavistock, 
Devonshire. 
Presented by Eichard Taylor, F.K.S. 
Shelf III. 
454 & 454a. Slickensides. 
Cam Brea Mines, Redruth, Corn¬ 
wall. 
Presented by the late J. Garby. 
455. Slickenside, in black 
shale’. 
Ogo Gyfwr, Llanhadrig, near 
Cemmaes, Anglesey. 
456. “ Slip-faces,” in the Coal 
Measures, where much broken and 
disturbed, above the coal seam of 
Lower Firoda, Co. Kilkenny, 
Ireland. 
457. Black Carbonaceous 
Shale, with friction-polished sur¬ 
faces or “ slip-faces,” accompany¬ 
ing faults. 
Roof of Englefield Colliery, Holy- 
well, Flintshire. 
458. Slickenside, in different 
directions, and exhibiting Copper 
and Iron Pyrites. 
In slate above the roof of coal, 
Lower Firoda, Co. Kilkenny, 
459. Slickenside, in Sparry 
Iron Ore. 
From the Lead *^flat veins,^* Al- 
lenheads, Northumberland. 
Illustrations of Cellular Lodes. Incrustation and subsequent 
disappearance of prior formed Minerals. 
Shelf IV. 
460. Iron Pyrites, deposited on 
Fluor Spar, fragments of which 
remain with pseudomorphous Pearl 
Spar. 
Devonshire. 
461. Octohedron of Fluor 
Spar, partly covered with Quartz. 
Consolidated Mines, Gwennap, 
Cornwall. 
462 & 463. Pseudomorphous 
crystals of Quartz, the octohedral 
Fluor \vhich ga.ve them their form 
having disappeared. 
Consolidated Mines, Cornwall. 
Presented by E. W. Fox, F.E.S. 
464. “Dog-tooth” crystals of 
Calc Spar have been invested 
with Carbonate of Iron, then re¬ 
moved, and the internal and ex¬ 
ternal surfaces sprinkled with 
Calc Spar. 
Long Cleugh Vein, Aldstone Moor, 
Cumberland. 
465. Iron Pyrites, with im¬ 
pressions of crystals of Barytes, 
which have disappeared. 
Huel Mary Ann, Cornwall. 
466. Zinc Blende, with cubic 
impressions of Fluor Spar crystals. 
Aldstone Moor, Cumberland. 
467. Pseudomorphous crystals 
of Calamine. 
Presented by the late G. B. Greenough, 
F.E.S. 
468. Tabular cr 3 ’’stals of Bour- 
NONiTE coated with Copper Pyrites, 
forming an investment pseudo- 
morph. 
Herodsfoot Mine, near Liskeard, 
Cornwall. 
Shelf V. 
469. Quartz, crystallized on 
tabular Calc Spar, which has been 
removed. 
Huel Alfred, Hayle, Cornwall. 
