108 
COMBY LODES 
270. PYuor Spar, encrusted 
with Quartz, diiFerentlj on various 
sides. 
Durham. 
271. Crystals of Fluor, with 
Calc Spar. 
Durham. 
272. Quartz, Calc Spar, and 
Fluor Spar, on Carbonate of Iron. 
Durham. 
273. Fluor Spar, showing that 
the increments of the crystals 
have been influenced by forces 
acting unequally in different direc¬ 
tions. 
Beer Alston, Devon. 
Shelf IV.. 
274. Fluor Spar and Nodu¬ 
lar Galena, on a disintegrated 
Limestone. 
Durham. 
Evidence of Success 
Shelf V 
281. Part of a Copper Lode, 
exhibiting several ' plates or 
“ combs.” 
Wheal Julia, Crorvan, Cornwall. 
Presented by Sir H. T. De la Eeche. 
282. Part of a Copper Lode, 
showing a plate of Quartz against 
a plate of Copper Pyrites. 
Godolphin Bridge Mine, Cornwall. 
Presented by Sir H, T. De la Beche. 
283. Vein of Calc Spar, show¬ 
ing by its “ comby ” portions that 
the Assure has been twice open. 
Carboniferous Limestone of Cal- 
don Low, North Staffordshire. 
284. Portion of a Copper Lode, 
consisting of alternate veins of 
Copper Pyrites and Quartz. 
Presented by John S. Enys, P.R.S. 
285. Metalliferous Gangue : 
Silver, with a small portion of 
275. Galena, with corroded 
surface, and partially covered with 
Quartz. 
Nant-y-Creiau Mine, Cardigan- 
shire. 
276. Galena, invested with and 
containing Calc Spar, IronPyrites, 
and fragments of Sandstone. 
Ticknall, Leicestershire. 
277. Galena, with Fluor Spar, 
on Sparry Iron Ore. 
Aldstone, Cumberland. 
278. Galena, with its surfaces 
singularly rounded before invest¬ 
ment by IronPyrites, and Calc Spar. 
Ticknall, Leicestershire. 
279. Fluor Spar, broken, and 
the fragments cemented by subse¬ 
quently crystallized Barytes. 
Huel Mary Ann, Cornwall. 
280. Cube of pale Fluor Spar, 
with Quartz crystals attached to 
the faces, and with Iron Pyrites 
only on certain sides. 
Aldstone, Cumberland. 
s Openings in Lodes. 
Gold, the whole intersected oy 
newer veins of spar. 
Hanging branch of the Biber Lode, 
Christina Mine, Schemnitz, 
Hungary. 
286. Argentiferous Galena, 
singularly corroded, and partially 
encrusted with Quartz. 
Goginan Mine, Cardiganshire. 
287. Cubes of Fluor, thickly 
encrusted on certain sides only 
with crystallized Carbonate of 
Iron. 
Aldstone, Cumberland. 
Shelf VI. 
288 and 289. Conglomerate, 
Allino; a “ slide ” which heaves the 
Lode, and containing fragments of 
rich Copper Pyrites broken off 
from the Copper Lode. 
From the 30 fathoms level, Knock- 
mahon Mine, Co. Waterford, 
Ireland. 
