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room vnr. (Div. 1.) Tin ores: several modifications of 
Nat. Hist, tin stone crystals; wood tin. Iron ores : mage 
table netic iron stone ; several steel-grey and tarnished 
varieties of specular iron (eisen-glantz) mostly 
from the Island of Elba ; micaceous iron (cubic 
oxide of iron of M. de Bournon) ; red and 
brown ironstone (some with pavonine and gold 
tarnish) ; sparry ironstone ; argillaceous iron: 
reniform or nodular ironstone, called eagle-stone 
(one set in gold, used as an amulet); iron py¬ 
rites in variously modified crystallizations : small 
cubic pyrites on blackish clay slate, also known 
by the name of Irish diamonds ; decomposed or 
liver pyrites; septaria. Copper pyrites and 
variegated copper ore. 
(Div. 2.) Variegated copper ore: copper py¬ 
rites with opal, &c.; native copper dendritical, 
laminar, &c.; hsematitiform and vitreous grey 
and red copper ores; earthy and indurated 
copper azure in combination with malachite, 
copper green, &c.; several varieties of mala¬ 
chite ; arseniate of copper (olive ore), &c. 
(Div. 3.) Arsenical ores: native arsenic (sclier- 
ben cobolt); arsenical pyrites; yellow orpiment; 
red orpiment or realgar. Copper nickel. Native 
bismuth: artificial crystallization of the same, 
by sudden cooling of the melted metal. Silver 
ores: native silver, massive, capillary, &c.; silver 
in 
