OF SEVERAL MINERALS. 
103 
181. Part of a Copper Lode. 
Virtuous Lady Mine, Tavistock, 
Devon. 
Presented hy Captain John Williams. 
182. Portion of a Copper Lode, 
near one of its walls. An ex¬ 
ample of a platy or “ comby ” lode : 
nearest the wall Quartz, then 
Blende, afterwards Iron Pyrites. 
Wheal Tolgus, Bedruth, Cornwall. 
Presented by John Michell. 
183. Strings of Copper Py¬ 
rites, traversing Elvan. 
Consols Mine, Gwennajp, Corn¬ 
wall. 
Presented by Sir H. T. De la Beche. 
184. Portion of the Lead Lode, 
with Schiefer Spar, or lamellar 
carbonate of lime, in granite. 
Luganure, County Wicklow, Ire¬ 
land. 
18o. Crystals of Galena, de- 
posited on Fluor, and the surfaces 
much encrusted. 
Cumberland. 
186. Radiated Blende, in 
spheroidal groups, enveloped in 
quartz. 
Pen-y-Cefn Mine, Cardiganshire, 
Contributed by the Geological Survey. 
187. Fluor Spar and Galena, 
the crystals successively coated by 
Quartz, Zinc Blende, and Quartz. 
Aldstone, Cumberland. 
Shelf III. 
188. Crystallized Carbonate 
OF Iron, dotted with minute crys- 
tals of Childrenite (Hydrous Phos¬ 
phate of Alumina and Iron). 
Tavistock, Devon. 
189 and 190. Galena and Coal, 
from a small lode of considerable 
regularity, in the lower Coal 
Measures. 
Whaley Bridge, 6 miles N. of 
Buxton, Derbyshire. 
Presented by T. Gisborne, M.P. 
191. Sample of a vein of Grey” 
Copper Ore. 
Berehaven Mines, County Cork, 
Ireland. 
192. A vein of Grey and White 
Arsenical Cobalt. 
Schneeherg, Saxony. 
193. Copper Py'rites and Fluor 
Spar, mingled in a lode. 
Wheal Unity Wood, Gwennap, 
Cornwall. 
Presented by Sir H. T. De la Beche. 
Shelf IV. 
]^4. Fine Scalenohedral Crvs- 
tals of Calcareous Spar, enclos¬ 
ing Copper Pyrites, and proving 
the simultaneous crystallization of 
the two minerals. 
Clayton Main, Ecton, Stafford¬ 
shire. 
Presented by Captain Bonsai. 
19o. Zinc Blende, or Sulphide 
of Zinc, on quartz and limestone. 
Aldstone Moor, Cumberland. 
196. Copper Pyrites, com¬ 
mingled with Crystalline Galena. 
Tuscany. 
Presented by the Tuscan Commis¬ 
sioner, 1851. 
197. Section of a Lode, showing 
that Quartz Crystals were first 
deposited upon the Wall, and then 
upon them Oxide of Tin, and the 
vein subsequently filled up with 
massive Quartz. 
St. Just, Cornwall. 
198. Part of a Tin Lode con¬ 
taining “ toads eye ” tin. 
Near Penzance, Cornwall. 
Presented by the late Joseph Came, 
F.R.S. 
199. Successive depositions of 
(1.) Red Iron Ore, or Haematite; 
(2.) Dark Brown Iron, or Go- 
thite; (3.) Light Brown or 
“Wood Iron and (4.) Ferru¬ 
ginous Quartz. 
From the Lode at the Bestormel 
Royal Iron Mine, Lostwithiel, 
Cornwall. 
200. Successive deposition of 
(1.) Red Oxide of Iron; (2.) 
